DAY 335:

Today’s Challenge

. . . is a tricky number puzzle from Mathematically Possible, our board game that is great for arithmetic and strategy:

Using the numbers 4, 5 and 10 once each, with + – × ÷ available, can you list the TEN different target numbers that are possible to achieve from 1 to 30 inclusive?

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 & 7th columns of the playing board contain the following fourteen numbers:

4    5    9    12    15    17    24    28    32    35    50    66    80    81

What is the product of the two prime numbers in the list?

Make 335 Challenge

Can you arrive at 335 by inserting 3, 4, 5, 6 and 7 into the gaps below?

[◯³+◯×(◯–◯)]×◯ = 335

Answers can be found here.

Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.

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