The Main Challenge
. . . involves making 7 when using the four numbers 0.7, 1.6, 2 and 10 once each, and with the four arithmetical operations + – × ÷ available.
Can you arrive at our signature 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 3rd & 7th columns contain the following fourteen numbers:
4 5 9 12 15 17 24 28 32 35 50 66 80 81
What is the sum of the multiples of 5 listed above?
The Factors Challenge
Which of the following numbers are factors of 334?
4 6 8 10 12 14 16 18 None of them
The Mathematically Possible Challenge
Using 2, 9 and 12 once each, with + – × ÷ available, which are the only THREE numbers it is possible to make from the list below?
5 10 15 20 25 30 35 40 45 50
#5TimesTable
The Target Challenge
Can you arrive at 334 by inserting 2, 3, 4, 4 and 5 into the gaps below?
- ◯⁵+◯⁴+◯³+◯²–◯ = 334
Answers can be found here.
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