The Main Challenge
Using the numbers 0.1, 0.6, 3 and 7 once each, with + – × ÷ available, can you arrive at the target number 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 2nd & 6th rows of the playing board contain the following fourteen numbers:
5 8 12 17 18 20 28 33 48 49 55 56 63 64
What is the sum of the multiples of 8?
The Factors Challenge
Which of the following numbers, if any, are factors of 253?
3 5 7 9 11 None of them
[ Today’s Hint: A number is a multiple of 3 if its digits add up to a multiple of 3 ]
The Mathematically Possible Challenge
Based on our best-selling arithmetic board game.
Using 5, 8 and 11 once each, with + – × ÷ available, which are the only TWO numbers it is possible to make from the list below?
7 14 21 28 35 42 49 56 63 70
#7TimesTable
The Target Challenge
Can you arrive at 253 by inserting 3, 5, 7, 9 and 11 into the gaps below?
- (◯–◯)²×(◯–◯)²–◯ = 253
Answers can be found here.
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