DAY 186:

Today’s Challenge

Here’s another 10-step question involving the four arithmetical operations and all the numbers from 1 to 10.  Start with the number 28, then:

  • divide by four
  • multiply by six
  • subtract two
  • add five
  • divide by nine
  • multiply by one
  • add ten
  • divide by three
  • add eight
  • subtract seven

Have an answer?  Leave a comment below or e-mail paul@7puzzle.com.

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 2nd & 3rd rows contain the following fourteen numbers:

8    13    17    25    28    36    42    45    48    55    63    64    66    80

What is the sum of the multiples of 11?

Make 186 Challenge

Can you arrive at 186 by inserting 3, 4, 6 and 9 into the gaps below?

(◯×◯+◯)×◯ = 186

Answers can be found here.

Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.

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