Question

In a 2-digit number, a and b are the digits at its tens and ones place respectively. Which of the following is the 2-digit number?
Please help me!!!!

Answer 1

as there is 2 digit number
so ,but the question we can understand that
a = tens places
b= ones place
by seeing this we can that their product will be in the form of distributive form .
for example- lets take number 5 as tens and 6 as ones
as their product will be 5 * 10 + 6

so, it is the form of 10*a+b
so the answer is 10 a+b

Answer 2

it is in the form of 10a+ b

as a on tens place so it can be written as in its place value = 10 x a = 0a 

similarly b = b

The original number = 10 a + b