some tacken from orkut

1. If n is positive integer greater than 0.
Col A: Unit digit of 156^n
Col B: Unit digit of 165^n

2. Given that a set A contains odd numbers less than 100, set B contains even numbers less than 5 & set C is formed by multiplying all the numbers of set A with set B.
Col A: set c
Col B: 100

3. 5000+sqrt(6.894*7001.2) is approximate equal to
A. 5200
B. 5700
C. 6000
D. 6500
E. 7000

4. There are 5 green balls, 3 black balls and 2 red balls in a box. If 2 balls are taken from it without replacement what is the probability that the selected balls are red?

5. Number of divisors of 72 which have 4 in its unit place
A. 1
B. 2
C. 3
D. 4
E. 5

6. Col A: |10^-3|
Col B: |10^3|

7. Col A: Standard deviation of 29, 33, 35, 37, 39, 43
Col B: Standard deviation of 221, 225, 227, 229, 231, 235

8. Col A: Value of ((1/0.001)+(1/0.099))
Col B: Value of ((1/0.002)+(1/0.098))

9. Given the area of the secor as 5/4pie. Find the perimeter of the sector of the circle of angle 72degree?

10. Given a sequence from -8 . . . . . . 184 and this sequence is obtained by adding 3 to the previous number. If 'n' is the total number of numbers in the series then
Col A: n
Col B: 65