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# Monthly Archives: February 2017

## DAY 60:

Today’s Challenge Read the information below to find the particular number in question: I am a 2-digit square number that does not contain any odd digits. What is the number? . 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 59:

Today’s Challenge Your starting number is 18 and your task is to arrive at the same final answer. There are ten arithmetical steps from beginning to end, each one involving a whole number, but the 9th, and penultimate, step is … Continue reading

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## DAY 58:

Today’s Challenge Starting from 1, find the sum of the first SEVEN whole numbers that do not contain a 3, 5 or 7 as part of their number, or are not multiples of 3, 5 or 7. . The 7puzzle Challenge The … Continue reading

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## DAY 57:

Today’s Challenge Replace the 12 ◯’s below with 1, 1, 2, 2, 3, 3, 4, 4, 5, 6, 7 and 8 so all three lines work out: ◯ + ◯ = 5 = ◯ – ◯ … Continue reading

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## 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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## 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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