DAY 271:

Today’s Challenge

If you write out all numbers from 1-100, what is the longest run of consecutive numbers that are not prime numbers?  What is the lowest and highest numbers in that run?

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 square numbers?

Make 271 Challenge

Can you arrive at 271 by inserting 3, 4, 4, 5 and 6 into the gaps below?

[(◯+◯)²+◯]×◯ = 271

Answers can be found here.

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