model 4 finding unit place of a number Practice Questions Answers Test with Solutions & More Shortcuts

Question : 16 [SSC CGL Tier-II 2015]

There is a number consisting of two digits, the digit in the units’ place is twice that in the tens’ place and if 2 be subtracted from the sum of the digits, the difference is equal to $1/6$ th of the number. The number is

a) 23

b) 26

c) 24

d) 25

Question : 17 [SSC CGL Tier-II 2013]

The unit digit in 3 × 38 × 537 × 1256 is

a) 8

b) 4

c) 6

d) 2

Question : 18 [SSC MTS 2011]

The units digit of the expression $25^6251 + 36^528 + 73^54$ is

a) 0

b) 6

c) 4

d) 5

Question : 19 [SSC CHSL 2014]

The digit in unit’s place of the product 49237 × 3995 × 738 × 83 × 9 is

a) 6

b) 0

c) 5

d) 7

Question : 20 [SSC S.O 2003]

The digit in unit’s place of the product 81 × 82 × 83 × ... × 89 is

a) 8

b) 0

c) 6

d) 2