"I've always been 45 years older than your Dad", said Grandma to young grandson.

"But now the two digits in my age, both prime, are the reverse of the two in your Dad's age".

How old is Grandma?

the answer to the question is... GRandma is 72 years old.... and Dad's age is 27.... both 7 and 2 r prime numbers. 72-27=45 meaning that they are 45 years apart. so the answer is.... grandma is 72 years old

Posted by hyun on 2004-11-15 15:41:05