Review

South Sydney Puzzle – August 2018

Take the digits 1,2,3,4,5,6,7,8,9.  Without changing their order, we shall allow ourselves to join adjacent digits to form larger numbers; and to put addition, subtraction and multiplication signs in between.

 

Illustration: Stephen Pickells

Illustration: Stephen Pickells

This gives, for example, 12 + 3 x 45 – 6 – 7 x 8 + 9 which works out to 94 (remember: multiplication is done first, then addition and subtraction from left to right).

Can you find a similar expression which works out to 2018?

Solution to previous puzzle:

If you tried to do this by leaving the red ace in the top left hand corner, you would have found that it was impossible.  The only way to do it is to move the black ace into the top left corner and the red ace into the bottom row.  Here is one of many possibilities:

10, 9, 8, BA, Q, J, 6, 7, BA, 3, 2, BA, 7, RA, BA, 2, 3, 7, RA, 6, J, Q, K, 8, 7, RA, 6, J, Q, K, RA, 7, 8, RA, K, Q, J, 6, 7, 8, 9, 10.

 

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