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Don’s Group – Homework – due back 16th September

Use the clues below to find the number that fits all statements. Be methodical and don’t give up!

Find the number:

  • It’s less than 100
  • It’s one more than a multiple of 3
  • Exactly one of the digits is prime
  • If you reverse its digits, you get a prime
  • It has exactly four factors
  • The sum of its digits is prime
  • If you multiply it by 5, the answer is greater than 100