DAY 319:

The Main Challenge

Apart from 8+3+2+1, list the FOUR other ways of making 14 when adding together four unique digits from 1-9 in our latest Kakuro-type challenge.

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 3rd & 4th columns contain the following fourteen numbers:

3   4   6   12   15   17   20   35   42   63   72   77   80   81

Which pair of numbers have a sum of 50?

The Factors Challenge

Which is the ONLY number below that is a factor of 319?

3    5    7    9    11    13    15    17    19

The Mathematically Possible Challenge

Using 47 and 11 once each, with + – × ÷ available, which are the only TWO numbers it is possible to make from the list below?

70    71    72    73    74    75    76    77    78    79

#NumbersIn70s

The Target Challenge

Can you arrive at 319 by inserting 2, 3, 4, 6 and 12 into the gaps below?

  •  ((◯+◯)×◯)²–(◯–◯)² = 319

Answers can be found here.

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