Category Archives: 7puzzleblog.com

DAY 18:

Today’s Challenge The numbers 21 to 29 inclusive must be allocated to each letter below so that each number satisfies the condition given on the line and only appears once: (a) even number, (b) factor of 144, (c) power of 3, (d) … Continue reading

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WELCOME

A warm welcome to 7puzzleblog.com and our compendium of daily number puzzles which we design for our many followers from over 160 countries & territories worldwide. We are also the place to visit for a variety of mathematical activities, including our exciting … Continue reading

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DAY 17:

Today’s Challenge Find the answer to this large number trail which involves fourteen arithmetical steps and includes fraction and percentage calculations.  Start with the number 11, then: double it 50% of this +50 subtract thirty-five ÷2 +37 3/5 of this … Continue reading

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DAY 16:

Today’s Challenge What is the sum of the 50 integers (or whole numbers) from 1 through to 50 inclusive? 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 1st … Continue reading

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DAY 15:

Today’s Challenge Your task is to multiply two numbers together and then subtract a third number to achieve the target answer of 7. The three numbers used in each calculation must all be unique digits from 1-9. For example, one … Continue reading

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DAY 14:

Today’s Challenge There are five different ways of making 8 when combining and adding together either two or three unique digits from 1-9.  One way is 7+1 (or 1+7), can you find the other four? The 7puzzle Challenge The playing board … Continue reading

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DAY 13:

Today’s Challenge Starting from 2, list the first seven even numbers that are NOT multiples of 3, 5 or 7. What is the 7th number in your list? The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 grid containing 49 … Continue reading

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DAY 12:

Today’s Challenge Add together the 7th prime number, the 7th square number, the 7th 2-digit number and the 7th whole number that contains a ‘7’. What is your answer? The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 grid … Continue reading

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DAY 11:

Today’s Challenge Today’s task is to arrive at the target number of 7 by using the four numbers 7, 7, 7 and 7 once each.  All four arithmetic operations + – × ÷ are available.  Can you make it? The 7puzzle Challenge The playing … Continue reading

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DAY 10:

Today’s Challenge Using seven 7’s (7, 7, 7, 7, 7, 7 and 7) once each, with + – × ÷ available, it is possible to make various target answers, such as 7 as shown here: 7+7+7+7–7–7–7 = 7,  or perhaps 7×(7÷7)×(7÷7)×(7÷7) = … Continue reading

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