1. Divide 45 into four parts such that when 2 is added to the first part, 2 is subtracted from the second part, 2 is multiplied by the third part and the fourth part is divided by two, all result in the same number.

2. What is the sum of the first 25 natural odd numbers?

3. Find the nth number in the series is 1, -3, 5, -7.___

4. How many rational numbers are there between 0 & 5

5. A certain number of bullets were shared by 3 people equally.Each of them fired 4 bullets and the sum of the remaining bullets was equal to the initial share each had got.what was the initial number of bullets?

6. Which of the following are prime numbers

(a) 119
(b) 115
(c) 127
(d) none

7). The sum of any seven consecutive numbers is divisible by

a) 2
b) 7
c) 3
d) 11

8 ). 0 < x < 1 which is greater

(a) 1/x2
(b) 1/x
(c) x
(d) x2

9).If 13 = 13w/(1-w) ,then (2w)2 =

(a) 1/4
(b) 1/2
(c) 1
(d) 2

10. 50 is divided into 2 parts such that the sum of their reciprocals is 1/12. Find the 2 parts.

(a) 20,30
(b) 24,26
(c) 38,12
(d) 40,10
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Answers:

Ans 1) 8, 12, 5, 20
Ans 2 ). 625
Ans 3). (-1)*(2n-1)
Ans 4). infinite
Ans 5) 18..( 18/3=6;
6-4=2,6-4=2,6-4=2;
2+2+2=6=ans)
Ans 6). (c)
Ans 7) (b)
Ans 8 ). (a)
Ans 9). (c)
Ans 10). (a)20,30