RRB JE Mock Test 2019

1. If m and n are positive integers and (m – n) is an even number, then (m^2-n^2 ) will always be divisible by:   (1)

1. 1. 4
2. 2. 6
3. 3. 8
4. 4. 12

2. Two number are such that their difference, their sum and their product are in the ratio of 1:7:24. The product of the numbers is:                         (3)

1. 1. 24
2. 2. 36
3. 3. 48
4. 4. 60

3. The digits indicated by * in 3422213** so that this number is divisible by 99 are:                   (1)

1. 1. 1, 9
2. 2. 3, 7
3. 3. 4, 6
4. 4. 5, 5

4. Find out the last digit 3^41×4^19×5^17 ?               (2)

1. 1. 5
2. 2. 0
3. 3. 1
4. 4. 2

5. Find out the number of different factor of 86400?                    (1)

1. 1. 96
2. 2. 128
3. 3. 72
4. 4. 112