DAY 353:

Today’s Challenge

. . . is a tougher target challenge where two decimal numbers plus two double-digit numbers are present in your calculation.

Using each of the numbers 0.5, 0.5, 10 and 12 once each, with the four arithmetical operations + – × ÷ available, can you arrive at the target answer of 7?

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 6th & 7th columns of the playing board contain the following fourteen numbers:

5    7    9    24    28    30    32    36    40    49    50    54    64    66

How many more square numbers than prime numbers are listed above?

Make 353 Challenge

Can you arrive at 353 by inserting 5, 6, 7, 9 and 16 into the gaps below?

×◯×(◯–◯)+√◯ = 353

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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