Question

Application Based Questions
1. Replace # in the number 178# by the smallest possible digit so that it is divisible by 6.​

Answer 1

divisibility rule of 6

has to be divisible by 2 and 3

divisibility rule of 2

last digit should be a even number

so '#' should be a even number

divisibility rule of 3

sum of the digits should come in 3 tables

1 + 7 + 8 = 16

16 is not divisible by 3

but it is divisible by 2

if '#' was 0 then 1+7+8+0=16

16 is not divisible by 3

if '#' was 2 then 1+7+8+2=18

18 is divisible by 3 and 2

∴ '#' should be 2

number = 1782