Today’s Challenge
Try the following MATHELONA challenge, taken from our pocket book of challenges.
Can you make all three lines work out arithmetically by replacing the 12 ◯’s below with the following 12 digits?
0 1 1 2 2 3 3 4 5 6 6 7
◯ + ◯ = 6 = ◯ – ◯
◯ + ◯ = 9 = ◯ × ◯
◯ + ◯ = 3 = ◯ ÷ ◯
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 2nd & 4th rows of the playing board contain the following fourteen numbers:
3 8 10 17 28 32 35 44 48 54 55 60 63 64
From the list, how many multiples of 9 are there?
Make 232 Challenge
Can you arrive at 232 by inserting 4, 8, 12, 16 and 20 into the gaps below?
(◯×◯)–(◯×◯÷◯) = 232
Answers can be found here.
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