MIND POWER

                                                    G.SHANKAR II YEAR IT

1.              If x + y = 3 & y/x = 2 then y =?

a. 0 b. ½ c. 1 d. 2

2.              If a = 2/3b, b = 2/3c and c = 2/3d what part of d is?

          a. 8/27 b.4/9 c. 2/3 d.75%

3.              Successive discounts of 20% and 15% are equal to a single discount of?

a. 30% b. 32% c. 34% d. 35%

4.              The petrol tank of an automobile can hold g liters. If a liter was removed when the tank was full, what part of the full tank was removed?

a. g-a b. a/g c. (g-a)/a d. (g-a)/g

5.              If 2x-y = 4 then 6x-3y =?

a. 15 b. 12 c. 18 d. 10

6.              If x = y = 2z and xyz=256 then what is the value of x?

a.12 b. 8 c. 16 d. 6

7.              (1/10)­­­­­ the whole power of 18 – (1/10)­­­­ the whole power of 20?

a. 99/10 power of 20 b. 99/10 c. 0.9 d. none of these

8.              Pipe A can fill in 20 minutes and Pipe B is 30 minutes and Pipe C can empty the same in 40 mins. If all of them work together, find the time taken to fill the tank?

a. 171/7 mins b. 20 mins c. 8 mins d. none of these

9.              Thirty men take 20 days to complete a job working 9 hours a day. how many hour a day should 40 men work to complete the job?

a.       8 hrs b.7 ½ hrs c. 7 hrs d. 9 hrs