Today’s Challenge
If you enjoy this, click MATHELONA for further details of our number puzzles.
You must make all three lines work out arithmetically by replacing the 12 ◯’s below with the digits 0, 0, 1, 1, 2, 3, 3, 4, 5, 6, 6 and 7:
◯ + ◯ = 7 = ◯ – ◯
◯ + ◯ = 5 = ◯ × ◯
◯ + ◯ = 6 = ◯ ÷ ◯
The 7puzzle Challenge
The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging from 2 up to 84.
The 1st & 6th rows contain the following fourteen numbers:
2 5 9 12 14 15 18 20 22 33 40 49 56 72
Which two numbers have a difference of 21?
Make 177 Challenge
Can you arrive at 177 by inserting 1, 7, 9 and 11 into the gaps below?
◯×(◯+◯)+◯ = 177
Answers can be found here.
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