DAY 297:

Today’s Challenge

This is a typical number puzzle from Kojiro Tominga in Yokohama, Japan.

Using 5, 5, 5 and 5, with – × ÷ available, can you make the target numbers of 5, 10, 15, 20, 25, 30 and 35?

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 double the lowest multiple of 9 found on the list?

Make 297 Challenge

Can you arrive at 297 by inserting 1, 2, 3, 4 and 5 into the gaps below?

◯²×(◯+◯)×(◯²–◯) = 297

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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