Question

the sum of my digit and tens digit is 10. my tens digit is greater than my ones digit i am a prime number. what number am i?

Answer 1

73. The tens must be greater than the ones, so it has to be 64, 73, 82, or 91. It cannot be 82 or 64 because 2 is the only even prime number. 91 are 7 and 13, leaving 73 as the number.