DAY 254:

Today’s Challenge

Kakuro is superb for improving people’s number combination skills. Follow the rules and have a go at this simple challenge:

  • Just like a crossword, fill in the boxes,
  • Each box must contain a number from 1-9 and each run of boxes must add up to the total shown on the left or above,
  • Digits cannot be repeated in each run, so if a total of 4 is to be completed in 2 boxes, this must be made up of either 3+1 or 1+3, but not 2+2.

Here is today’s Kakuro puzzle:

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 & 6th rows contain the following fourteen numbers:

5    8    12    17    18    20    28    33    48    49    55    56    63    64

List five pairs of numbers that have a difference of 15.

Make 254 Challenge

Can you arrive at 254 by inserting 1, 3, 5, 7 and 10 into the gaps below?

(◯+◯)ײ–◯×◯ = 254

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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