DAY 273:

Today’s Challenge

Starting with the number 70, keep on subtracting consecutive prime numbers from the previous total (2, 3, 5, …) until your answer becomes negative. What is this number?

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 & 7th rows contain the following fourteen numbers:

4    8    11    17    24    27    28    30    48    55    63    64    70    77

What is the sum of the multiples of 6?

Make 273 Challenge

Can you arrive at 273 by inserting 1, 3, 5, 7 and 9 into the gaps below?

(◯+◯–◯)×◯×◯ = 273

Answers can be found here.

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