SET-1

1. Find the sum of divisors of 544 which are perfect squares.

(a) 32 

(b) 64

(c) 42 

(d) 21

2. Find the sum of odd divisors of 544.

(a) 18 

(b) 34

(c) 68 

(d) 36

3.The 7th and 21st terms of an AP are 6 and –22 respectively. Find the 26th term.

(a) –34 

(b) –32

(c) –12 

(d) –10

4. The sum of 5 numbers in AP is 30 and the sum of their squares is 220. Which of the following is

the third term?

(a) 5 

(b) 6

(c) 8 

(d) 9

5.Four geometric means are inserted between 1/8 and 128. Find the third geometric mean.

(a) 4 

(b) 16

(c) 32 

(d) 8