# Monthly Archives: December 2018

## DAY 351:

The Main Challenge This is perhaps a bit trickier than you think! Add these four numbers together and write your answer in words: Two hundred and four thousand and nine, Seventy thousand, nine hundred and eight, Four hundred and fifty thousand … Continue reading

## CROESO

A warm Welsh welcome, or Croeso, to 7puzzleblog.com and our compendium of daily number puzzles. Five challenges are posted each day, seven days a week, and designed for our many followers from nearly 170 countries & territories throughout the world. As well as our … Continue reading

## DAY 350:

The Main Challenge This involves one of our favourite puzzles, Kakuro, which is all about addition and number combinations. Your task is to find different ways of making 29 when adding together six UNIQUE digits from 1-9. One such way is 9+8+6+3+2+1; can … Continue reading

## DAY 349:

The Main Challenge Using the numbers 4, 4 and 8 once each, with + – × ÷ available, what is the lowest whole number it is not possible to achieve? The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 … Continue reading

## DAY 348:

The Main Challenge This number puzzle is based on the concept of my FlagMath series of card games. Here is an example of a typical challenge in the Multiplication edition. Each of the nine letters, A-I, in the two sections below contains … Continue reading

## DAY 347:

The Main Challenge How many 3-digit numbers contain at least two 7’s? 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 4th & 7th columns contain the … Continue reading

## DAY 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

## DAY 345:

The Main Challenge A gentle logic puzzle for all members of the family to try. The nine numbers, 1-9, must be placed into the 3-by-3 grid by following these rules: 1 is in the top right-hand corner 3 and 8 … Continue reading

## DAY 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

## DAY 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