Author Archives: 7puzzle

DAY 56:

Today’s Challenge Replace the 12 ◯’s below with the 12 numbers 0, 1, 2, 2, 3, 3, 4, 6, 6, 7, 9 and 9 so that all three lines work out arithmetically: ◯  +  ◯   =     6 … Continue reading

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DAY 55:

Today’s Challenge ‘Can You Pass A Simple Math Test?’ was recently published in the United States and contains five multiple choice questions.  Answer A, B, C or D each time. How many seconds are in 2 hours?       … Continue reading

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WELCOME

A warm welcome to 7puzzleblog.com and our compendium of daily number puzzles which we design and produce for our many followers from over 160 different countries and territories. As this website is home to the 7puzzle company, we are also the … Continue reading

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… AND THERE’S MORE!

As well as the many hundreds of number challenges posted here at 7puzzleblog.com, some of the educational activities the 7puzzle company is currently involved in are: supporting students with one-to-one maths tuition, delivering school-based maths/puzzle workshops, designing board games, card games, puzzles & books for use in our workshops … Continue reading

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DAY 54:

Today’s Challenge Can you insert 3, 3, 6 and 8 into the four gaps on each line so all three answers equal 10 in this number puzzle from Japan?  (◯–◯)×◯÷◯ = 10  (◯×◯+◯)÷◯ = 10  (◯–◯÷◯)×◯ = 10 [Note:  The 3rd line involves a tricky … Continue reading

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DAY 53:

Today’s Challenge From the numbers  1  2  3  4  5  6  7  8  9  10  12  14  15  16  18  20  21  24  25, eliminate: square numbers triangular numbers multiples of 4 factors of 70. Which is the one number … Continue reading

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DAY 52:

Today’s Challenge List the five 2-digit numbers that have all the following attributes: are not odd numbers, are not multiples of 3, 4, 5 or 7, and has its digits adding up to more than 10? . The 7puzzle Challenge The playing … Continue reading

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DAY 51:

Today’s Challenge Using each of the numbers 0.1, 0.5, 3 and 6 once each, and with the four arithmetical operations available, can you arrive at the target answer of 7 by two different ways? . The 7puzzle Challenge The playing board of the … Continue reading

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DAY 50:

Today’s Challenge Using the numbers 4, 5 and 6 once each, together with + – × ÷, find the THREE target numbers from the following list that it is NOT mathematically possible to make: 2     3     4 … Continue reading

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DAY 49:

Today’s Challenge You roll two normal six-sided dice, both containing the numbers 1-6.  If you multiplied the two numbers that show, how many DIFFERENT answers is it possible to obtain? . The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 … Continue reading

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