Q1. Which one of the following is not a prime number?

1. 31
2. 61
3. 71
4. 91

EXPLANATION

Option 4.

Q2. (112 x 5^4) = ?

1. 67000
2. 70000
3. 76500
4. 77200

EXPLANATION

Option 4.

Q3. A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?

1. 12 days
2. 15 days
3. 16 days
4. 18 days

EXPLANATION

Option 2.

Q4. Two students appeared at an examination. One of them secured 9 marks more than the other and his marks was 56% of the sum of their marks. The marks obtained by them are:

1. 39, 30
2. 41, 32
3. 42, 33
4. 43, 34

EXPLANATION

Option 3. 

Let one student secure x marks.

Therefore, the other student secures (x+9) marks.

Q5. A fruit seller had some apples. He sells 40% apples and still has 420 apples. Originally, he had:

1. 588 apples
2. 600 apples
3. 672 apples
4. 700 apples

EXPLANATION