Monthly Archives: March 2018

DAY 81:

Today’s Challenge Carry out the following 15-step number trail – with no calculator! Start with 20, then: +1  ÷3  ×5  –7  +2  ÷6  +4  –1  ×3  ÷4  +4  –5  ×1  +3  ×6  =  ? What is your final answer? The 7puzzle Challenge The playing board … Continue reading

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DAY 80:

Today’s Challenge Each of the nine letters, A-I, in the two sections below has a subtraction calculation attached to it.  Which is the only letter that has the same answer in both sections? Section 1 C:24–13  G:14–6  D:20–10  E:15–7  I:14–9  F:18–11  B:9–2 … Continue reading

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DAY 79:

Today’s Challenge If each letter is assigned a value as follows, A=1 B=2 C=3 . . . Z=26, can you find a 7-letter word in the English language that has the value of 79 when the values of all seven letters are added … Continue reading

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DAY 78:

Today’s Challenge Using the three numbers 5, 5 and 5 once each, with + – × ÷ available, which are the only seven target numbers from 1-30 that are mathematically possible to achieve? The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 … Continue reading

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DAY 77:

Today’s Challenge The two sections below both contain eight letters, A to H.  Each letter has a calculation attached.  Which is the only letter to have the SAME answer in BOTH sections? Section 1 E:8×3   B:30÷2   H:15+3   … Continue reading

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DAY 76:

Today’s Challenge It is possible to use seven 4’s (4, 4, 4, 4, 4, 4 and 4) once each, together with the four operations + – × ÷, to make all the different target numbers 1, 2, 3 and 4. For instance, … Continue reading

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DAY 75:

Today’s Challenge Start with the number 13, then follow these ten arithmetic steps: –2   +5   ÷2   ×5   –4   ÷9   +1   ×5   –1   ÷4   =   ? What is your final answer? The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 … Continue reading

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DAY 74:

Today’s Challenge Can you arrive at the target answer of 24 by using the digits 2, 9, 13 and 13 exactly once each and with + – × ÷ available? The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 grid of 49 … Continue reading

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DAY 73:

Today’s Challenge As well as 9+4+1, there are SEVEN other ways of making 14 when adding together three unique digits from 1-9.  List these seven combinations. The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging from 2 up … Continue reading

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DAY 72:

Today’s Challenge From the numbers 1 to 20 inclusive, find the only one that remains when all square numbers, multiples of 6, factors of 40 and odd numbers are eliminated. The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging … Continue reading

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