It is greater than 30 and less than 40.If you add the digits,the sum is 10

Answer 1

31, 32, 33, 34, 35, 36, 37, 38, 39

Which number has digits that add up to 10?

For instance, 31 = 3 + 1 = 4.

Answer 2

Duh! That's 37.