### Junior Deputy Director in Intelligence Bureau (2008)

(51) . . 3/1000 written as a fraction is:

1. 0.3

2. 0.003

3. 0.03

4. 0 0003

(52) . . While watching TV'from 7 pm to .8 p.m. you count 20 commercials, each 30 second long. What nearest percent of the hour is taken by the commercials.

1. 0.17

2. 0.46

3. 0.13

4. None

(53) . On neon sign blinks every 6 seconds. Another neon sign blinks every 8 seconds. If they blink together and you begin counting seconds, how many seconds after they will next blink together?

1. 4 seconds

2. 10 seconds

3. 14 seconds

4. None

(54) . In a caravan, in addition to 50 hens there are 45 goats and 8 camels with some keepers. If the total number of feet be 224 more than the number of heads, find the number of keepers.

1. 15

2. 14

3. 16

4. 47

(55) . A mixture contains alcohol and water in the ratio of 12:5. On adding 14 litres of water, the ratio of alcohol to water becomes 43. The quantity of alcohol in the mixture is:

1. 18 litres

2. 24 litres

3. 26 litres

4. None

(56) . Express 78 as percentage:

1. 0.675

2. 0.31

3. 0.975

4. None

(57) . The radius of a sphere is increased by 10%. The surface area increases by:

1. 0.21

2. 0.31

3. 0.41

4. None

(58) . The average of 7 consecutive numbers is 33. The largest of these number is:

1. 36

2. 33

3. 30

4. 28

(59) . . If x3 + 1x3 = 52, the value of x + 1x is:

1. 4

2. 3

3. 6

4. 13

(60) . If 4a = 8b, what is he ratio of a to b?

1. 12

2. 23

3. 32

4. 24