### Assistant Director FIA past paper 2020

(31) . ..... is the storage device that stores the operating system and application programs?

1. Flash memory

2. Cache

3. Hard disk

4. ROM

(32) . If A and B together can complete a piece of work in 15 days and B alone in 20 days, in how many days can A alone complete the work?

1. 60

2. 45

3. 40

4. 30

(33) . If 10 men can do a piece of work in 12 days, the time taken to 12 men to do the same piece of work will be?

1. 12 days

2. 10 days

3. 9 days

4. 8 days

(34) . The sum of four consecutive two-digit odd numbers, when divided by 10, becomes a perfect square. Which of the following can possibly be one of these four numbers?

1. 21

2. 25

3. 41

4. 67

(35) . A retailer increases the selling price by 25% due to which his profit percentage increase from 20% to 25%. What is the percentage increase in cost price?

1. 20%

2. 30%

3. 25%

4. 50%

(36) . The average age of A, B, C, D, and E is 40 years. The average age of A and B is 35 years and the average of C and D is 42 years. Age of E is?

1. 48

2. 46

3. 42

4. 45

(37) . Which number will complete the following num series: 3, 6, 15, ..... , 123, 366?

1. 34

2. 59

3. 42

4. 60

(38) . Which number will come next? 2, 5, 12, 23, 38, 57, .....?

1. 69

2. 76

3. 80

4. None of these

(39) . A father tells his son, "I was of your present age when you were born". If the father is 36 now, how old was the boy five years back if he is half the age of his father now?

1. 13 years

2. 15 years

3. 17 years

4. None of these

(40) . Slove: (1000)9รท (10)24

1. 10000

2. 1000

3. 100

4. None of these