# Category Archives: 7puzzleblog.com

## DAY/DYDD 296:

The Main Challenge Using any five numbers from 1-5 (more than once each if required) and with + – × ÷ available, can you find THREE different ways to make the target number 86? The 7puzzle Challenge The playing board of the … Continue reading

## DAY/DYDD 295:

The Main Challenge . . . is from Volume 1 of our Mathelona pocket book. You have a limited amount of numbers to work with, so can you make all three lines work out arithmetically by filling the 12 gaps with these numbers? 1 … Continue reading

## DAY/DYDD 294:

The Main Challenge This Banana & Clock Puzzle caused quite a stir and promoted lots of discussion on twitter last year: What do you think the answer on the final line is? The 7puzzle Challenge The playing board of the 7puzzle game is … Continue reading

## DAY/DYDD 293:

The Main Challenge Here is a FlagMath-style puzzle derived from our series of card games. Each of the eleven letters, A-K, in the two sections below contains a percentage calculation. Which is the only letter to have the SAME answer in … Continue reading

## DAY/DYDD 292:

The Main Challenge Following on from DAY 240, here’s another one of the unique Keith Number challenges made famous by Mike Keith and similar to the Fibonacci sequence. If you like playing around with numbers, you’ll love having a go at this … Continue reading

## DAY/DYDD 291:

The Main Challenge Read the following facts to work out my identity: I am a 2-digit number my two digits have a difference of four add 13 to me and I become a square number Who am I? The 7puzzle Challenge … Continue reading

## DAY/DYDD 290:

The Main Challenge When using the numbers 3, 3 and 4 once each, with + – × ÷ available, list the TEN target numbers from 1-30 that are mathematically possible to make? The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 grid of 49 different … Continue reading

## DAY/DYDD 289:

The Main Challenge What is the biggest number you can make when using the four digits 1 2 3 4 and following these rules: you can use brackets and + – × ÷ as often as you like, you cannot use any number more than … Continue reading

## DAY/DYDD 288:

The Main Challenge Can you arrive at the target answer of 7 by using each of the numbers 0.2, 0.2, 5 and 6 exactly once each, with + – × ÷ available? The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 grid … Continue reading

## DAY/DYDD 287:

The Main Challenge When allocating each letter of the English alphabet a numerical value as follows, A=1 B=2 C=3 . . . Z=26, calculate your answer when adding up the values of the individual letters of: MATHEMATICALLY POSSIBLE Take a … Continue reading