DAY 289:

Today’s Challenge

What is the biggest number you can make when using these four digits once each

1         2         3         4

and following these rules:

  • you can use brackets and – × ÷ as often as you like,
  • you cannot use any number more than once,
  • you cannot use powers/indices,
  • you cannot put numbers together (using 1, 2 and 3 to make 123, for example).

Good luck and enjoy!

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 4th & 7th rows contain the following fourteen numbers:

3    4    10    11    24    27    30    32    35    44    54    60    70    77

Find three different numbers that have a sum of 100.

Make 289 Challenge

Can you arrive at 289 by inserting 2, 3, 4, 6 and 7 into the gaps below?

(◯×◯–◯)²+◯²◯² = 289

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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