DAY 102:

Today’s Challenge

Can you place the 16 numbers 0, 0, 1, 1, 2, 2, 3, 4, 4, 5, 6, 7, 7, 8, 9, 9 into the 16 gaps below so all four lines work out arithmetically?

◯  +  ◯   =     9     =   ◯  +  ◯
◯  +  ◯   =     7     =   ◯  –  ◯
◯  +  ◯   =    12    =   ◯  ×  ◯
◯  +  ◯   =     6     =   ◯  ÷  ◯

If you enjoyed this number puzzle, click MATHELONA for details of similar challenges.

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 2nd & 5th rows of the playing board contain the following fourteen numbers:

6   7   8   16   17   21   28   48   50   55   63   64   81   84

What is the sum of the square numbers?

Make 102 Challenge

Can you arrive at 102 by inserting 3, 4, 6 and 10 into the gaps on both lines?

  •  (+◯+◯)×◯ = 102
  •  ◯²+◯×◯÷ = 102

Answers can be found here.

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

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