DAY 245:

Today’s Challenge

Using the numbers 5, 5 and 10 once each with + – × ÷ available, list the nine target numbers from 1-30 that are mathematically possible to achieve.

Click Mathematically Possible to visit our arithmetic and strategy board game.

The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from up to 84.

The 5th & 7th rows of the playing board contain the following fourteen numbers:

4    6    7    11    16    21    24    27    30    50    70    77    81    84

Which four different numbers have a sum of 100?

Make 245 Challenge

Can you arrive at 245 by inserting 4, 5, 6, 8 and 9 into the gaps below?

◯×◯×◯–◯×◯+7 = 245

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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