R4RIN – MCQs, Mock Tests | Aptitude Average mcq for competitive exams

In a campus test the average marks of X and Y is 80. The average of X and Z is 85 and the average of X and Z is 90. Find Y marks.

1. 76
2. 75
3. 87
4. 78.9

✅ Correct Answer: 2

Find the average of the first 50 whole numbers -

1. 24
2. 21.5
3. 24.5
4. 25.5

✅ Correct Answer: 3

The average of 5 consecutive odd numbers is 25. Find the smallest of these numbers.

1. 21
2. 19
3. 24
4. 25

✅ Correct Answer: 1

The average of first five odd numbers is -

1. 10
2. 7
3. 5
4. 6

✅ Correct Answer: 3

The average of first five prime numbers is -

1. 23/5
2. 22/5
3. 5-Nov
4. 28/5

✅ Correct Answer: 4

The average of X and 15 is 30, then X is -

1. 43
2. 45
3. 55
4. 35

✅ Correct Answer: 2

find the average of all composite numbers between 1 and 15-

1. 10
2. 10.5
3. 11
4. 9

✅ Correct Answer: 4

Find average of all prime number between 1 and 15

1. 41/6
2. 43/6
3. 51/6
4. 53/6

✅ Correct Answer: 1

find the average of the first five multiple of 2 -

1. 5
2. 7
3. 6
4. 8

✅ Correct Answer: 3

find average of the first ten multiple of 3

1. 16
2. 16.5
3. 17
4. 17.5

✅ Correct Answer: 2

find the average of the first five multiple of 5-

1. 25
2. 5
3. 20
4. 15

✅ Correct Answer: 4

Find the average of all even number between 1 and 21.

1. 12
2. 13
3. 11
4. 14

✅ Correct Answer: 3

X score 96 in the first interval and 82 in the second interval. How much should he score in the third interval in order to get an average of 90 ?

1. 98
2. 92
3. 90
4. 96

✅ Correct Answer: 2

In a match, India target is 180. After 12 overs, the run is 7.5. what is the required run for the remaining overs to achieve the target ?

1. 13
2. 11
3. 11.5
4. 11.25

✅ Correct Answer: 4

The average age of our family of fur is 35. Excluding me, the average age is 40. find my age.

1. 23
2. 65
3. 56
4. None of the above

✅ Correct Answer: 4

Find the average of first six prime numbers.

1. 6.833
2. 15
3. 7
4. 34

✅ Correct Answer: 1

The average of 4,6,32 is

1. 16
2. 10
3. 14
4. None of the above

✅ Correct Answer: 3

The average of 2-x, 8+x is -

1. 6
2. 8
3. 5
4. Not exist

✅ Correct Answer: 3

The average of 23+3x, 4-x, 57-2x is -

1. 25
2. 26
3. 27
4. 28

✅ Correct Answer: 4

The average of 3x+4, 7-2x and 2x-11 is -

1. x
2. 2x
3. x-4
4. 2x-5

✅ Correct Answer: 1

The average of a two digit number and the number obtained by interchanging the digit is 55. what is the sum of the two digits of the number ?

1. 12
2. 10
3. 8
4. 15

✅ Correct Answer: 2

The average of 4,8,6,p and q is 6, find average of p+1 and q-3.

1. 6
2. 5
3. 7
4. 10

✅ Correct Answer: 2

Average of 23,57,4, X and Y is 20, then the average of X and Y is ?

1. 16
2. 4
3. 18
4. 8

✅ Correct Answer: 4

Average of 23,57,4, X and Y is 20, then the average of X,Y-4,8,16 is ?

1. 9
2. 10
3. 8
4. 12

✅ Correct Answer: 1

Average of 23,57,4, X and Y is 20, then-

1. X+Y is 20
2. X+Y is 10
3. X+Y is 14
4. None of the above

✅ Correct Answer: 4

Average of X and Y is 30 and the average of Y and Z is 20, find X-Z

1. 15
2. 30
3. 45
4. 20

✅ Correct Answer: 4

if S be a set contain the elements 0,2,5,6,8,9. Which number should be removed from S, so that the average is remain same ?

1. 0
2. 5
3. 6
4. Not possible

✅ Correct Answer: 2

After his 15th inning, the average score of a batsman increases by 1. His previous Average was 80. find his score in the 15th inning.

1. 80
2. 95
3. 85
4. 89

✅ Correct Answer: 2

If area of square is 64 unit, then the average of all four side of square is ?

1. 8
2. 16
3. 64
4. 32

✅ Correct Answer: 1

If side of square is X and area of square is 256 unit, then the average of X,X and 16 is ?

1. 15
2. 32
3. 16
4. 18

✅ Correct Answer: 3

Find the average of the terms in the series. 1-2+3-4+5.............+199-200

1. 1
2. 1.5
3. -1.5
4. -0.5

✅ Correct Answer: 4

Mean of 3 number is 10 more than the least of the numbers and 15 less than greatest of 3. if the median of 3 number is 5, find the sum of the 3 numbers.

1. 30
2. 35
3. 40
4. 45

✅ Correct Answer: 1

Of a set of 30 numbers, average of 1st 10 numbers is equal to average of last 20 numbers. The sum of last 20 numbers is

1. 1
2. 2
3. 3
4. None of the above

✅ Correct Answer: 4

The time taken by the phone operator to complete a call are 2,9,3,1,5 minutes respectively. what is the median time per call ?

1. 5 min
2. 4 min
3. 3 min 10sec
4. 3 min

✅ Correct Answer: 4

The time taken by the phone operator to complete a call are 2,9,3,1,5 minutes respectively. what is the average time per call ?

1. 4 min
2. 4 min 30 sec
3. 5 min
4. 6 min

✅ Correct Answer: 1

The selling price of two books is 400 and 500 and customer needs both books at the average price of both books, then in what price customer purchase the books ?

1. 500
2. 900
3. 450
4. 400

✅ Correct Answer: 3

The selling price of two books is 400 and 500 and customer needs both books at the average price of both books, then in what price customer purchase the books if customer give 100 rupee more for books ?

1. 550
2. 500
3. 450
4. 600

✅ Correct Answer: 1

The average height of two tower is 40 meter, if lowest tower is 10 meter short as compare to long tower then height of lowest tower is

1. 45
2. 35
3. 60
4. data insufficient

✅ Correct Answer: 2

The average height of two tower is 40 meter, if lowest tower is 10 meter short as compare to long tower then height of big tower is

1. 45
2. 35
3. 40
4. data insufficient

✅ Correct Answer: 1

The average height of two building is 40 meter, if small building is 10 meter short as compare to big building, then the addition of height of both the buildings is

1. 90
2. 60
3. 70
4. 80

✅ Correct Answer: 4

The average of first nine prime numbers is

1. 10
2. 13
3. 12
4. None of the above

✅ Correct Answer: 4

The average of X and 3X is -

1. X
2. 2X
3. 4X
4. 3X

✅ Correct Answer: 2

The average of X and Y is -

1. lies outside the range
2. lies before the X
3. lies After the Y
4. lies between the X and Y

✅ Correct Answer: 4

Average of n number is similar as

1. mean of n-1 number
2. sum of n number
3. sum of n number divided by n
4. product of n number

✅ Correct Answer: 3

The average of X and Y is Z then -

1. Z=X-Y
2. X-Z=Y
3. X=Y
4. Z-X=Y-Z

✅ Correct Answer: 4

Speed of arrow is 40 km/sec and air flow at 30 km/sec, the average of both the speed is -

1. 35
2. 45
3. 30
4. 20

✅ Correct Answer: 1

If book1 have 100 pages and book2 have 200 pages, if we combine both books and then again separated half by half, then one book contain -

1. average of two book pages
2. 150
3. Both of the above
4. None of the above

✅ Correct Answer: 3

If book1 have 200 pages and book2 have 300 pages, if we combine both books and then again separated half by half, then one book contain -

1. 250
2. 200
3. 300
4. 350

✅ Correct Answer: 1

Average of n same number is always-

1. the sum of n number
2. product of n number
3. number itself
4. None of the above

✅ Correct Answer: 3

Average of 10 and 20 is -

1. average of 5 and 25
2. 15
3. average of 1 and 29
4. All of the above

✅ Correct Answer: 4