Monthly Archives: December 2020

DAY/DYDD/GIORNO/NAP 346:

The Main Challenge This is a problem-solving question from a typical Eleven Plus exam many years ago. Can today’s generation solve it? Twice one hundred and sixty-eight added to four times another number gives a total of four hundred and eighty. … Continue reading

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DAY/DYDD/GIORNO/NAP 345:

The Main Challenge A gentle logic puzzle for all members of the family to try. Can you correctly insert the numbers 1-9, once each, into the 3-by-3 grid when following the rules below? x             … Continue reading

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DAY/DYDD/GIORNO/NAP 344:

The Main Challenge Can you find the 4-digit number that has all these properties?  its second digit is twice the first,  its fourth digit is three times the third,  all its digits are different,  no two of its digits are … Continue reading

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DAY/DYDD/GIORNO/NAP 343:

The Main Challenge Follow the rules and eliminate every number, except one. From the numbers 1-50, eliminate: all numbers containing 1, 3, 5 or 7 even numbers square numbers There is just one number left, which one? The 7puzzle Challenge … Continue reading

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DAY/DYDD/GIORNO/NAP 342:

The Main Challenge . . . is a regular favourite of ours where at least one decimal number is present when trying to arrive at our signature target number, 7. Using the numbers 0.25, 2, 4 and 6 once each, and with the … Continue reading

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DAY/DYDD/GIORNO/NAP 341:

The Main Challenge All the following 3-digit numbers are divisible by 4, except one!  Which one is it? 228   274   308   336   412   484   528   552   660   796   888   944 The 7puzzle Challenge The playing board of the 7puzzle game is a … Continue reading

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DAY/DYDD/GIORNO/NAP 340:

The Main Challenge List the only two numbers below 100 that have exactly 10 factors. 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 2nd & 7th columns … Continue reading

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DAY/DYDD/GIORNO/NAP 339:

The Main Challenge Clues are given to help you find a particular number from the following facts: I am a 2-digit number represented by just one word when written in English, On one side of me is a multiple of … Continue reading

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DAY/DYDD/GIORNO/NAP 338:

The Main Challenge Here’s a number trail involving 12 arithmetical steps. Start with the number 21, then: 1/3 of this multiply by seven +23 ÷3 +75% +5 –7 Find 10% of this Square this +2 Double this Square root of … Continue reading

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DAY/DYDD/GIORNO/NAP 337:

The Main Challenge You have three each of 1p, 2p, 5p and 10p coins. What is the lowest amount of money that CANNOT be made when using three, or fewer, coins? The 7puzzle Challenge The playing board of the 7puzzle game is a … Continue reading

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