DAY 86:

Today’s Challenge

Can you show how to use six 7’s (7 7 7 7 7 and 7) once each, together with the four arithmetical operations + – × ÷, to make the target answer of 100?

The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from 2 up to 84.

The 4th & 5th rows of the playing board contain the following fourteen numbers:

3   6   7   10   16   21   32   35   44   50   54   60   81   84

What is the sum when adding together all the multiples of 10?

Make 86 Challenge

Can you arrive at 86 by inserting 2, 4, 10 and 14 into the gaps on each line?

  •  ◯×(◯–◯)+◯ = 86
  •  ◯×◯÷◯+² = 86
  •  (◯²–◯)÷◯– = 86

Answers can be found here.

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

This entry was posted in 7puzzleblog.com. Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *