DAY 46:

Today’s Challenge

The smallest positive integer that has exactly three factors is FOUR; these are 1, 2 and 4. When finding the next integer to have just three factors, what is the product of these three numbers?

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 3rd & 7th rows contain the following fourteen numbers:

4   11   13   24   25   27   30   36   42   45   66   70   77   80

What is the sum of the multiples of 10?

Make 46 Challenge

Can you arrive at 46 by inserting 3, 4, 5 and 9 into the gaps on each line?

  •  (◯+◯)×◯+ = 46
  •  ◯²+◯×◯+ = 46
  •  ◯×◯+◯–√◯ = 46

Answers can be found here.

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