DAY 312:

Today’s Challenge

By using the formula (a×b)±c, where a b and c are three unique digits from 1-9, one way of arriving at 24 is (5×3)+9, but there is only one other way of making 24 when using the above rule. Can you find it?

[Note:  (5×3)+9 = 24 and (3×5)+9 = 24 counts as just ONE way.]

The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from 2 up to 84.

The 2nd & 5th rows of the playing board contain the following fourteen numbers:

6    7    8    16    17    21    28    48    50    55    63    64    81    84

Which three pairs of numbers all have a difference of 47?

Make 312 Challenge

Can you arrive at 312 by inserting 2, 3, 4, 6 and 8 into the gaps below?

(◯+◯+◯)×◯×◯ = 312

Answers can be found here.

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