The phrase “good at” is the correct expression when referring to someone's skill or proficiency in an activity. Therefore, “She is very good at swimming” is the right choice.

Hence, the correct answer is option a. at

The phrase “by 8 pm” indicates that Ravi will have arrived home at or before 8 pm tomorrow. The preposition “by” is used to denote a deadline or the latest time something will happen.

Hence, the correct answer is option c. by

The article “an” is used before words that begin with a vowel sound. The word “honest” starts with a vowel sound (the ‘h’ is silent), so “an honest and diligent student” is correct.

Hence, the correct answer is option b. an

The passive construction for “Who did it?” is “Who was it done by?” This structure correctly changes the direct action into a passive form.

Hence, the correct answer is option b. Who was it done by?

The preposition “at” is used to indicate a specific point or location. So, “We had to stop at the entrance for the security check” is the correct choice.

Hence, the correct answer is option c. at

The correct spelling is "vacuum," which refers to a device used for cleaning. None of the other spellings are correct.

Hence, the correct answer is option c. vacuum

"Oxen" is the traditional plural form of "ox."

Hence, the correct answer is option a. oxen

A female deer is called a "doe." "Stag" refers to a male deer, and "deeress" is not a standard term.

Hence, the correct answer is option b. doe

This is a third conditional sentence, which expresses a hypothetical situation in the past. The correct form is "would have come."

Hence, the correct answer is option c. would have come

Goats make a sound called "bleating."

Hence, the correct answer is option a. bleating

For the statement "They have already arrived," the question tag needs to match the auxiliary verb and be in the opposite form. The statement uses "have," so the tag should use "haven't" (the negative form), making the complete tag "Haven't they?"

Hence, the correct answer is option b. Haven’t they?

To "put out" a cigarette means to extinguish it.

Hence, the correct answer is option b. put out

The phrase "gave away" means to surrender or yield, often used when someone cannot do anything further.

Hence, the correct answer is option a. away

"Quite" means to a considerable extent or degree. So, "I am quite hungry" correctly expresses a strong level of hunger.

Hence, the correct answer is option c. quite

"Recurring" means happening again or repeatedly. Therefore, "occurring repeatedly" is the correct synonym

Hence, the correct answer is option a. occurring repeatedly

"Off" is the direct antonym of "on," indicating the opposite state or condition.

Hence, the correct answer is option c. off

"Although" is used to introduce a contrast between two clauses. In this sentence, it indicates that despite being popular, the person did not win the election.

Hence, the correct answer is option c. Although

In indirect speech, the direct question "Are you sure?" becomes "She asked me if I was sure."

Hence, the correct answer is option a. She asked me if I was sure.

The correct verb form here is "stolen," which is the past participle used in passive constructions to indicate that the purse was taken from you.

Hence, the correct answer is option c. stolen

"Looking forward to" is followed by a gerund (the -ing form). Therefore, "seeing" is correct.

Hence, the correct answer is option c. seeing

"Stationery" refers to office supplies like pens, paper, etc.

Hence, the correct answer is option a. stationery

"Wide enough" correctly indicates that the bed lacks sufficient width for two people.

Hence, the correct answer is option b. wide enough

"More serious" is the correct comparative form to indicate a greater degree of seriousness.

Hence, the correct answer is option a. more serious

"On page 13" is the correct preposition to indicate the location of something in a document.

Hence, the correct answer is option b. on

"The best" is the correct superlative form to indicate that Reeta is the most skilled dancer in the class.

Hence, the correct answer is option a. the best

A "fire extinguisher" is a device used to put out fires

Hence, the correct answer is option b. extinguisher

For the statement "I am an engineer," the correct tag question is "Aren't I?" This is an exception to the usual rules for forming tag questions.

Hence, the correct answer is option a. Aren’t I?

Being in a state of dilemma means being confused or unsure about something, which corresponds to being "puzzled."

Hence, the correct answer is option c. puzzled

Hallucination refers to the experience of seeing things that are not actually present.

Hence, the correct answer is option a. hallucination

"Worse" is the correct comparative form to indicate that she is not as skilled as her friend.

Hence, the correct answer is option b. worse

"Could" is used to indicate the purpose or intention for which Sulav sold the land, implying that the sale was intended to enable him to buy a new house.

Hence, the correct answer is option a. could

In conditional sentences expressing a hypothetical situation, "would" is used in the main clause to indicate the result of the condition.

Hence, the correct answer is option b. would

"Sensitive" means easily affected by external conditions, which fits the context of catching a cold easily.

Hence, the correct answer is option b. sensitive

"Purgatory" is often associated with a place of temporary suffering or purification, closely related to the concept of "hell."

Hence, the correct answer is option b. hell

A "creek" and a "rivulet" both refer to a small stream or brook.

Hence, the correct answer is option c. rivulet

The phrase "No sooner had I left the room" is a specific construction used to indicate that one event happened immediately after another. The complete sentence should be:

No sooner had I left the room than the bomb exploded.

Hence, the correct answer is option d. none of the above

"Better" is the correct comparative form to indicate that Sarita plays chess with more skill than her sister.

Hence, the correct answer is option b. better

After "looking forward to," you should use a gerund (the -ing form). Therefore, "seeing" is correct.

Hence, the correct answer is option  a. seeing

"Call off" means to cancel or postpone something. Therefore, "call off the cricket match" is the correct phrase

Hence, the correct answer is option c. off

"Broke out" is used to describe the sudden onset of something, like a disease. Therefore, "cholera broke out" is the correct phrase.

Hence, the correct answer is option a. out

Given,

sum of the product and quotient of 4 and 4 is

Product= 4x4=16

quotient=4/4 = 1

now, sum=product + quotient =16+1=17

Hence, the correct answer is option d. 17

Given,

Even Number= 2,4,6,8,................... are the positive even numbers

According to the questions,

even numbers between -4 and 5 are -2,0,2,4

for average of all even numbers between -4 and 5 is (-2+0+2+4)/4 = 1

Hence, the correct answer is option a. 1

Given,

prime numbers are:2,3,5,7,11,13,............

According to the questions,

sum of first five prime numbers = 2+3+5+7+11=28

Hence, the correct answer is option d. 28

Hence, the correct answer is option d. 0

Given,

product of two consecutive even number is 224.

From the given option

a. 16, 18 their product 16x18 = 288  which is not equal to the value which is given in the questions

b. 12, 14 their product 12x14=168 which is not equal to the value which is given in the questions

c. 14, 16 their product 14x16=224 which is equal to the value which is given in the questions

Hence, the correct answer is option c. 14, 16

Let, x be a number

then according to the questions,

5+x^2=14

x^2=14-5

x^2=9

x=3

Hence, the correct answer is option a. 3

3 spoons = 1 glass,-------------(i)

2 glasses= 1 plate,............(ii)

(?)spoons =1 plate

then,

From equation(ii)

2 glasses= 1 plate

1 glasses= 1/2 plate ---------(iii)

From equation(i) &(iii)

3 spoons = 1/2 plate

then

3x2 spoons =1 plate

6 spoons=1 plate

Hence, 6 spoons equals to one plate

Hence, the correct answer is option b. 6

Given,

matrix order = 5 x 7(always first=row, second = Column)

So, Row=5, Column=7

Hence, the correct answer is option d. 7

Given, equation are

3x + 4y = 7-------(i) and 4x – y = 3-----(ii)

for find the value of x & y we need to solve equation(i) and (ii)

but we are going to find the value of x & y from the given option

From option a. 1, 1

Put the value of option a in x& y in both equations

3x + 4y = 7

3x1+4x1=7

7=7(true)

from equation(ii)

4x – y = 3

4x1-1=3

3=3(true)

Hence, the both equations satisfy by the option a

So, the correct answer is option a. 1,1

Given,series is 1, 9, 25, x, 81,121

firstly we have to identify the pattern of the series

1, 9, 25, x, 81,121

1^2, 3^2, 5^2,x^2, 9^2, 11^2

1,3,5,x,9,11 which is odd number

so the value of x must be 7 and it's square is 7^2 = 49

Hence, the correct answer is option c. 49

Given value is a, b, and c

and it's average is (a+b+c)/3---------(i)

but in questions a + b = c

so equations(i) becomes

(c+c)/3

=2c/3

Hence, the correct answer is option c. 2c/3

Given equation is y = -2x – 8-------(i)

We have to find the value of x for which y is less than 9

From option

a. -8;       y = -2x – 8,

y=-2 x (-8)-8

y=16-8=8 <9

Let's check other option

b. -9;       y = -2x – 8,

y=-2 x (-9)-8

y=18-8=10 >9

From checking two option we conclude that option a is the right answer

Hence, the correct answer is option a. -8

Given, equation is 2x – 4y = 9

For Slope= -coefficient of x/coefficient of y

= (-2)/(-4)

=1/2

Hence, the correct answer is option b. 1./2

The slope of horizontal line is 0

hence, the correct answer is option c. 0

Given,

3/5 of 80 - 30% of 80

=3/5  x 80 -  30/100  x 80

=16 x 3 - 24

=24

Hence, the correct answer is option d. 24

Gautam spent Rs. 40/-, which is 5% of his daily wage,

In simple terms; If Gautam spent Rs 40  which is the 5% of total earning of one day

From Option,

a) Rs.400   = 400 x 5/100 = Rs 20 which is not equal to the given questions (i.e Rs 40)

b) Rs.600 = 600 x 5/100 = Rs 30 which is not equal to the given questions (i.e Rs 40)

c) Rs.800 = 800 x 5/100 = Rs 40 which is equal to the given questions (i.e Rs 40)

Hence, the correct answer is option c. Rs. 800

Given,

1254376 represents the CENTURY,

C=1, E=2, N=5, T=4, U=3, R=7, Y=6

Then, 735= RUN

Hence, the correct answer is option c. RUN

Here, If you clearly see in the given matrix which is  lies between 1 to 9 but 8  is missing

so, the correct answer is option b. 8

Given,

Total number of students=48

let boys are twice than girls so Boys=2x and girls=x

2x+x=48

3x=48

x=16

Hence, the correct answer is option a. 16

Given,

x=(80% of x) +5

x= 80x/100  +5

x- 5 =8x/10

10x-50 = 8x

2x=50

x=25

Hence, the correct answer is option d. 25

From the questions

Ratio=2:3 and Sum= 30

From option

a. 14, 16 then 14/16 = 7:8 which is not equal to questions(i.e 2:3)

b. 10,20 then 10/20 = 1:2 which is not equal to questions(i.e 2:3)

c. 12,18 then 12/18=2:3 which is equal to questions(i.e 2:3)

and sum 12+18=30

so, option c which is equal to the questions i.e ratio and sum

Hence, the correct answer is option c. 12,18

Given,

Age of five girls are 15, 16, 17, 18, 19

average= (15+16+17+18+19)/5 = 85/5 = 17

Hence, the correct answer is option b. 17

In the given figure, there are 8 triangles

Hence, the correct answer is option c. 8

The value of cos 60 ̊  is 1/2

Hence, the correct answer is option b. 1/2

Given, series is 1, 1, 2, 3, 5, 8, 13, x.

If you clearly see the series first and second sum equals to third term i.e 1+1=2, 2+1= 3, 3+2=5, 5+3=8, 8+5=13, 13+8=21

Hence, The value of x is 21

Hence, the correct answer is option a. 21

Given, 'n' is an integer, and which of the following must be even

For Even, it should be the multiple of 2 so from option d. 2n is correct answer

So, the correct answer is d. 2n

The factorial of 255 is 3x5x17 and 3,517 are the prime numbers out of these 17 is the largest prime number

Hence, the correct answer is option c. 17

The sum of first n natural number is: {n(n+1)}/2

Hence, the correct answer is option a. {n(n+1)}/2

Given, equation is,

3x^2– 8x + 16 = 0 comparing with ax^2+bx+c=0

a=3, b= -8, c=16

then, b^2-4ac=0

= (-8)^2 - 4x3x16

= 46-292

= -128 which is imaginary

Hence, the correct answer is option c. imaginary & unequal

Given,

x + y = 12

x=12-y---------(i)

x – y = 6

12-y-y=6 (from equation(i) )

12-6=2y

6=2y

y=3

then from equation(i)

x=12-3=9

then, x^2– y^2

(9)^2-(3)^2

=81-9

=72

Hence, the correct answer is option d. 72

Given,

x – 5 = 2,

x=2+5

x=7

then, x + 12

=7+12

=19

Hence, the correct answer is option c.19

Given,

=(6^4−6^3)/5

=6^3(6-1)/5

=6^3 x 5/5

=6^3

Hence, the correct answer is option b. 6^3

Given,

4/a + 4/a + 4/a + 4/a = 16

or, (4+4+4+4)/a=16

or, 16/a = 16

a=1

then, 4a=4x1=4

Hence, the correct answer is option a. 4

Given, line is x/a+ y/b= 1

For slope= - coefficient of x/ coefficient of y

=-(1/a) / (1/b)

=-(b/a)
Hence, the correct answer is option b. -(b/a)

Given, x = 4y-----(i), what percent of 2x is 2y

then, (2y/2x) x100%

=(2y/2 x 4y) x 100% (from equation(i))

=25%

Hence, the correct answer is option d. 25%

Given,

9 kg sugar= Rs. 270

1 Kg sugar= 270/9 = Rs 30

1 Kg Sugar= Rs 30

but, we have to find how much sugar can be purchased for Rs. 390

for that,

390/30

=13 Kg Sugar

Hence, the correct answer is option c. 13

Given,

3 bananas cost = 50 cents,

1 bananas cost = 50/3 cents

but we have to find the how many bananas can be bought for 20 dollars

We know, 1 dollars=100 cents

so, 20 dollars= 20x100 cents = 2000cents

then, 2000/(50/3)

=2000x3/5

=120

Hence, the correct answer is option a. 120

Given,

5:7 = 15:x

5/7 = 15/x

so, 5*x= 15*7

5x=105

x=105/5 = 21

Hence, the correct answer is option b. 21

Given,

SP=150

gain=30

we know,

Gain= sp-cp

or, 30=150-cp

cp=150-30

cp=120

Then,

G%=(Gain x 100)/cp

=(30x100)/120

=300/12

=25%

Hence, the correct answer is option a. 25%

Given,

Cp=RS 5

Sp=?

Gain%=20%

We know,

Sp=(100+G%) x cp/100

=(100+20)x5/100

=6

Hence, the correct answer is option c. RS 6

Given,

Rate(r)=2%

Population doubling time(PDT)= 70/r (formula)

then, 70/2 = 35

Hence, the correct answer is option c. 35 yrs

Cardinal number means the numbers of the elements in a set so,

Given, set V = {a, e, i, o, u} is:

Cardinal number of given set is 5

Hence, the correct answer is option b. 5

Given,

=√18/√72

=√18/72

=√o.25

=0.5( i.e 1/2 which is in the form of p/q)

Hence, the correct answer is option a. a rational number

Let x be a number then,

5/7 * x = 1025

5x= 1025 * 7

x= 1435

then 3/7 of number= 3/7 * x

3/7 * 1435

=615

Hence, the correct answer is option c. 615

we know,

1 hours= 60 min

1 min= 60 sec

then from questions

4/3 hours

4/3* 60 *60 seconds

=4800 seconds

Hence, the correct answer is option a. 4800 seconds

Given,

Carpet wide = 4m & length=?

for room long=8m & wide=3m

Area of room= long * wide= 8*3=24

Now , length of carpet =24/4=6m

Hence,the correct answer is option b. 6m

Hari ranks seventh from the top and twenty sixth from the bottom in a class.

the total number of students in a class=(26+7)-1=32

Hence, the correct right answer is option d. 32

Given,

3 girls=3 pages=3 minutes

1 girls=1 pages=1 minute

i.e, 3 girls=3 pages

1 girl=3/3=1 page

3 pages=3 minutes

1 page=3/3 =1 minute

how many minutes can one girl write one page?

one girl write one page in 1 minute

Hence, the correct answer is option d. 1 min

The devastating earthquake in Nepal occurred on April 25, 2015, which corresponds to 2072 Baisakh 12 in the Nepali calendar.

Hence, the correct answer is option c. 2072 Baisakh 12

The Constitution of Nepal was officially promulgated on September 20, 2015, which corresponds to 2072 Asoj 3 in the Nepali calendar.

Hence, the correct answer is option b.  2072 Asoj 3

The novel "Ek Chihan" was written by the renowned Nepali author Hridaychandra singh Pradhan

Hence, the correct answer is option a. Hridaychandra singh Pradhan

Kusti, also known as traditional wrestling, is played in an "Akhada," which is a traditional wrestling pit or arena. This is where the sport is practiced and competed.

Hence, the correct answer is option d. Akhada

Charles Babbage is widely regarded as the "father of the computer" due to his design of the early mechanical computer known as the Analytical Engine, which laid the groundwork for future computing devices.

Hence, the correct answer is option a. Charles Babbage

MySQL is a relational database management system used for managing databases. It allows users to create, retrieve, update, and manage data.

Hence, the correct answer is option a. MySQL

LCD stands for Liquid Crystal Display, which is a technology used for screens in various devices like televisions, computer monitors, and smartphones.

Hence, the correct answer is option b. Liquid Cristal Display

Nepal Bank Limited, established in 1937, is considered the first bank in Nepal. It was the first commercial bank set up in the country.

Hence, the correct answer is option a. Nepal Bank Limited

The Nobel Prizes are awarded in the fields of Physics, Chemistry, Medicine, Literature, Peace, and Economic Sciences. Computer Science is not among the categories awarded

Hence, the correct answer is option a. Computer Science

According to Nepal's new constitution, which was adopted in 2015, the country is divided into 7 provinces.

Hence, the correct answer is option b. 7