DAY 53:

Today’s Challenge

From the numbers  1  2  3  4  5  6  7  8  9  10  12  14  15  16  18  20  21  24  25, eliminate:

  • square numbers
  • triangular numbers
  • multiples of 4
  • factors of 70.

Which is the one number that is left remaining?

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The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging from up to 84.

The 1st & 5th rows contain the following fourteen numbers:

2     6     7     9     14     15     16     21     22     40     50     72     81     84

What is the difference between the lowest and highest multiples of 5?

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Answers

. . . can be found when clicking this.

7puzzleblog

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