T he Main Challenge
From the following list of numbers:
12 14 18 21 25 28 30 33 35 36 40 42 44 48 54 55 56
find the ONLY number remaining when you eliminate multiples of 3, 5 and 7.
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 3rd & 7th rows contain the following fourteen numbers:
4 11 13 24 25 27 30 36 42 45 66 70 77 80
What is the sum of the multiples of 4?
The Factors Challenge
Which is the ONLY number below that is a factor of 259?
3 5 7 9 11 13
[ Today’s Hint: Use the ‘bus stop’ method of division to see which of the above numbers divide exactly into 259 ]
The Mathematically Possible Challenge
Using 5, 8 and 11 once each, with + – × ÷ available, which is the ONLY number it is possible to make from the list below?
50 51 52 53 54 55 56 57 58 59
#NumbersIn50s
The Target Challenge
Can you arrive at 259 by inserting 1, 3, 5, 7 and 9 into the gaps below?
- (◯+◯)²+√(◯+◯+◯) = 259
Answers can be found here.
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