Winnie write the following riddle.i am a number between 60 and 100.my ones digit is teo less than my trns digit.i am a prime number.winnie's friend marci guessed that her riddle was about the number 79.why can't 79 be the answer to winnie's riddle?

The criteria is
Between 60 & 100
Units digit 2 less than tens
Prime number

79 is a number between 60 & 100 and it is a prime number (as its only factors are 1 and itself), however 79 has a tens digit that is 2 less than the units - not the units 2 less than the tens.
As it does not comply with one of the rules the number cannot be 79

The number that would work is 97

Can you repost with the image you are referencing?