DAY 283:

Today’s Challenge

. . . is MATHELONA with a difference, not an addition in sight!

But can you still make all four lines work out arithmetically by replacing the 16 ◯’s with digits from 0 to 9?  Remember, each digit can only be inserted a maximum of twice:

◯  –  ◯   =    6    =   ◯  ×  ◯
◯  –  ◯   =    2    =   ◯  ÷  ◯
◯  –  ◯   =    8    =   ◯  ×  ◯
◯  –  ◯   =    1    =   ◯  ÷  ◯

Full details of our pocket book 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 & 6th rows contain the following fourteen numbers:

2    5    9    12    14    15    18    20    22    33    40    49    56    72

Which three different numbers on the list have a sum of 100?

Make 283 Challenge

Can you arrive at 283 by inserting 2, 3, 4, 5 and 6 into the gaps below?

(◯×)+◯³+◯³–◯³ = 283

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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