DAY 189:

Today’s Challenge

Can you insert the numbers 1-9, exactly once each, into the gaps below so that all three lines work out arithmetically?

◯   +   ◯   =   ◯
◯   –   ◯   =   ◯
◯   ÷   ◯   =   ◯

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 & 3rd rows contain the following fourteen numbers:

8    13    17    25    28    36    42    45    48    55    63    64    66    80

Which number, when 20 is added to it, becomes a square number?

Make 189 Challenge

Can you arrive at 189 by inserting 3, 4, 5 and 7 into the gaps below?

◯×◯×(◯+◯) = 189

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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