Puzzle of the Week: Mystery Number

question 1
What’s the mystery number?


  • It’s greater than one million but less than ten million.
  • It’s an even number.
  • None of the digits is less than 3.
  • No digit is used more than once.
  • The sum of the digits in the ones period is 12.
  • The digit in the ten thousands place is equal to the sum of the digits in the tens and hundreds places.
  • The digit in the millions place is 2 more than the digit in the thousands place.
  • The digit in the hundred thousands place is twice the digit in the tens place.

Congratulations to Kelly who was the first to correctly solve last week’s problem. Can you solve this puzzle? Post your answer as a comment and we will reveal them at the end of the week. 1,000,000 team points if you can work out the answer!

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