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?
A. a × b B. 10a + b
C. 10b + a D. 10 (a + b )

Answer 1

B because a will multiply by 10 as it is at ten's place and b will be as it is (units digit)

Answer 2

The two-digit number is  B. 10a + b.

Here it is given that In a 2-digit number, a and b are the digits at its tens and one's place respectively.

We can see that we have a two-digit number with 'a' at its tens place. Therefore the value of a will be denoted by multiplying it by 10.

Now, 'b' is at one's place therefore we will multiply b with 1.

So we will get our two-digit number by adding these two digits along with their values.

Therefore our two-digit number will be 10a + b.