Thursday, October 2, 2008

Problem Of The Week 38

My grandson, my son, and i share the same bday, this year all 3 of our ages have become prime numbers. i remarked to my son that For the last 17 years prior to this year, whenever your age was a prime number, so was mine and vice versa. "yes" he replied and said that 17 years from now, i will say to my son, for that last 18 years prior to this year, whenever your age was a prime number so was mine. How old are we?

2 comments:

  1. Pretty easy once you list all the primes below 100. The ages of you, your son and your grandson are 67,37 and 13 respectively.Never knew you grew so old!:p

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  2. Hehe, you hit the spot
    there is no trickery here
    just to list all primes from 1-100
    and visualise the pattern :)

    Good job!!

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