# day/dydd 272 at 7puzzleblog.com The Main Challenge

This 10-step number trail, involving the four arithmetical operations, may leave you in sixes and sevens!

• 6
• multiply by 6
• +7
• divide by 7
• subtract 6
• +6
• ÷7
• 7 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

List the four pairs of numbers that have a difference of 13. The Factors Challenge

Which FOUR from the following list are factors of 272?

2     4     6     8     10     12     14     16     18 The Mathematically Possible Challenge

Using 37 and once each, with + – × ÷ available, which are the only THREE numbers it is possible to make from the list below?

2    3    5    7    11    13    17    19    23    29 The Target Challenge

Can you arrive at 272 by inserting 4, 6, 6, 8 and 10 into the gaps below?

•  (◯+◯–◯÷◯)×◯² = 272   