Question

Write the smallest value of x for which each of the following 3 digit numbers are completely divisible by 3:
1)23x
2)x54
3)x47
4)5x2

Answer 1

Hi ,

By the divisibility rule of 3 ,

***********************
If Sum of the digits in a number

divisible 3 then the number is

divisible by 3

***********************

1 ) 23x

2 + 3 + 1 = 6 ( divisible by 3 )

x = 1

2 ) x54

x = 3

3) x47

x = 1

4 )5x2

x = 2

Answer 2

This is the correct answer