PSI Pre 2013

1. 

What is the following sum?  

1+2-3-4 +5+6-7-8+..........+25 +26-27-28

2. 

If 16 workers needed 21 days to weave 100 sarees , then how many workers will be needed to weave 200 sarees in 12 days ?

3. 

615  What is the unit digit of 615 ?

4. 

If , than  is equal to :

5. 

If  and  then find an equation whose roots are α and β

6. 

The value of 9 + 9 x 9 - 9 ÷ 9 is __________ .

7. 

8. 

Sachin, Sehwag and Dhoni together scored 228 runs. If Sehwag scored 12 runs more than Dhoni and Dhoni scored 9 runs less than Sachin. Then how many runs did Sachin Score ?

9. 

In a total of 5 one day international cricket games Rahul has scored runs at an average of 97. In every game he scored atleast 82 runs. What is his highest score in any game? 

10. 

What is the sum of : 

11. 

The sum of the squares of three consecutive odd positive non-zero numbers is 251. The numbers are ___________ .

12. 

What is a square root of 

13. 

If then x is equal to:

14. 

Average of two numbers A and B is 20, that of B and C is 19 and of C and A is 21. What is the value of A?

15. 

If 2x = 3y = 4z,than x : y : z = ?

16. 

After substracting 8 from a given number and dividing the resultant by 8 we get 2 as a quotient. Now substracting 4 from the original given number and dividing this resultant by 4 what will be the quotient ?

17. 

The first term of a geometric series is 6 and ratio is 2. Find its 9th term.

18. 

What is the value for the following division ? 

19. 

What is the correct answer for the following division ?

20. 

If a number is increased by 45% then it becomes 116. What is the number ?

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