Question

the digit in the ones place of a two digit number is twice the digit at the tens place write the number

Answer 1

there are many such numbers
eg 12 24 36 48

Answer 2

Hi ,

Let ten's place digit = x

Unit place digit = 2x

Required number = 10x + 2x

= 12x

Here , x = 1 ,2 , 3 ,4

I hope this helps you.

:)