**Q.1. Find the average of first 50 even numbers.**

(a) 51

(b) 60

(c) 56

(d) 59

a

**Q.2. The average of certain first consecutive even numbers is 101. Find their sum**

(a) 25,000

(b) 33,600

(c) 10100

(d) 24,960

c

**Q.3. Find the average of all the prime numbers between 20 and 40?**

(a) 36

(b) 30

(c) 40

(d) 28

b

**Q.4. If the average of m numbers is n^2 and that of n numbers is m^2, then the average of (m+n) numbers is-**

(a) m⁄n

(b) m+n

(c) mn

(d) m-n

c

**Q.5. A, B, C, D and E are five consecutive odd numbers. Average of A and C is 59. What is the smallest number?**

(a) 65

(b) 63

(c) 61

(d) 57

d

**Q.6. The difference between the average of three consecutive even numbers and the average of the next two consecutive even numbers is 5. What is the first even number?**

(a) 10

(b) 12

(c) 14

(d) Can’t be determined

d

**Q.7. The sum of the average of three consecutive odd numbers and three consecutive even numbers is 21. If the highest even number is 16, what is the lowest odd number?**

(a) 5

(b) 7

(c) 9

(d) 11

a

**Q.8. The average of five consecutive odd numbers is k. if next three odd numbers are added then the new average will exceed the old average by –**

(a) 1

(b) 3

(c) 5

(d) 4

b

**Q.9. The average of three numbers is 28. If first number is half of the second and 3rd number is twice the second, then the third number is**

(a) 48

(b) 46

(c) 44

(d) 28

a

**Q.10.The average of three numbers is 77. The first number is twice the second and the second is twice the third. The first number is**

(a) 33

(b) 66

(c ) 77

(d) 132

d