ORKUT QUANT DATABASE(feed back) (Till July 11th)

1. If t^4 = 16, then
Col A: t
Col B: 2

2. If x(x+4)(2x-15)(x-1)(x+2) = 0, then what is the product of maximum and minimum value of x?

3. Col A: 0.03hr - 8min
Col B: 4min
(Question is similar to this)

4. A square which has a volume 125 cubic feet is fitted into a cylinder provided the square is inflexible. Then, what will be volume of cylinder?
Col A: Volume of cylinder
Col B: 125pi/2

5. The probability of A hitting a target is 2/3. And probability of B hitting the same target is 4/7. So, what is the probability that neither of them will hit the target?

6. If ak = 1/k-1/(k+1), then find out the summation of a2 to a100?
(Here k, 2 & 100 are suffixes)

7. If x = (2-squareroot3)(1-squareroot5)(2+squareroot3)(1+squareroot5), then find out x?

8. If s^2 = 81
Col A: s
Col B: 9

9. If 'f' is function such that f(x) = sum of prime factors of x (even repeating prime factors)
Col A: f(256)
Col B: f(210)

10. Given a sequence a1, a2........ an. If a1 = 25 & in the sequence if every number is '-2' times the preceding number, then
Col A: a100
Col B: -10,000

11. Col A: The standard deviation of 10, 20, 50, 80, 90.
Col B: The standard deviation of 11, 30, 50, 70, 90.

12. Given four co-ordinates (1,6), (5,6), (1,3), (5,3) in xy-coordinate. If all these points are connected to form a square, then which of the options below lie within the square?
A. (2,2)
B. (4,4)
C. (5,2)
D. (6,6)
E. (6,8).

13. If x < 0 & y =! 0, then
Col A: x.y^2
Col B: 0

14. If a line y = mx + b has x-intercept (-2) and y-intercept 3, then
Col A: Slope of the line
Col B: 2/3

15. If x < 0, then (-x)(-x)/(-x) = ?

16. If m > n & m, n are positive integers, then
Col A: 1/ n^(-m)
Col B: 1/m^(-n)

17. If a square is divided into n^2 equal small squares (n>= 4: integer), then the number of small squares containing only one of their sides along the perimeter of the big square is?

18. 10 persons can watch a movie in 7 days. What is the probability that at least two them watch on the same day?

19. If [z] represents greatest value less than or equal to z and x & y are positive, then
Col A: [x]+[y]
Col B: [x+y]

20. If x < 0, then
Col A: -x
Col B: |x|

21. If n is a positive integer, the number of primes in between n and n+6 cannot be?
A. 0
B. 2
C. 6
D. 3
E. 4