DAY 263:

Today’s Challenge

One of our popular MATHELONA challenges awaits you, can you complete this by making all four lines work out arithmetically?  Replace the 16 ◯’s with digits 0 to 9, but each digit can only be inserted a maximum of twice.

◯  +  ◯   =    8    =   ◯  +  ◯
◯  +  ◯   =    8    =   ◯  –  ◯
◯  +  ◯   =    8    =   ◯  ×  ◯
◯  +  ◯   =    7    =   ◯  ÷  ◯

Further details of our pocket book of challenges can be found by clicking MATHELONA.

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 1st & 5th rows contain the following fourteen numbers:

2    6    7    9    14    15    16    21    22    40    50    72    81    84

Which three different numbers listed have a sum of 100?

Make 263 Challenge

Can you arrive at 263 by inserting 4, 5, 6, 7 and 8 into the gaps below?

(◯×◯×◯)+◯²+◯ = 263

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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