Directions : The following questions are based on the five three digit numbers given below:

972 526 487 359 251

1. If the positions of the firs and second digits are interchanged which of the following will be third if they are arranged in ascending order?

(1) 359

(2) 972

(3) 526

(4) 487

(5) 251

Ans. 1

2. If 2 is added to the sum of the digits of each of the above numbers how many will be multiples of 5?

(1) None

(2) One

(3) Two

(4) Three

(5) None of these

Ans.4

3. If 1 is subtracted from the last digit of each of the above numbers the sum of the digits of how many of them are prime numbers?

(1) None

(2) Two

(3) One

(4) Three

(5) All five

Ans. 3

4. If the digits in each of the above numbers are written in reverse order which will be the second highest number?

(1) 251

(2) 359

(3) 487

(4) 526

(5) 972

Ans.3

5. If the positions of the digits of each of the numbers are interchanged such that the first becomes second, second becomes third and third becomes firs, which, of the following will be the highest?

(1) 972

(2) 526

(3) 487

(4) 251

(5) 359

Ans. 5