Monthly Archives: November 2021

The Main Challenge . . . involves making 7 when using the four numbers 0.7, 1.6, 2 and 10 once each, and with the four arithmetical operations + – × ÷ available. Can you arrive at our signature target answer of 7? The 7puzzle … Continue reading →

The Main Challenge Each of these three numbers is the product of three consecutive whole numbers: 120       210       336 What is the next number in this sequence? The 7puzzle Challenge The playing board of the … Continue reading →

The Main Challenge If you eliminated multiples of 3, 5 and 7 from this list: 12   14   18   21   25   28   30   33   35   36   40   42   44   48   54   55   56   60 which is the ONLY number that would … Continue reading →

The Main Challenge Here is an interesting logic puzzle for you to try. Insert the numbers 1-9 into the correct positions in this 3-by-3 grid after studying the seven clues below. Each number should appear exactly once. x         … Continue reading →

The Main Challenge This is a number trail involving ten arithmetical steps. Be careful with your calculations – and no calculators please! Start with the number 40, then: multiply by 4 +10% subtract 15 divide by seven add nine 1/2 of this … Continue reading →

The Main Challenge … is a Mathelona number puzzle where you must solve all four lines arithmetically by filling the 16 gaps below with digits 0-9. Each digit 0-9 can only be inserted a maximum of TWICE in the whole puzzle: … Continue reading →

The Main Challenge . . . will get you thinking of the 5- and 7-times tables, plus some addition. What is the total of the first SEVEN whole numbers that have a 5 or 7 as part of their number … Continue reading →

The Main Challenge . . . is a tricky question that’s a real mouth-watering prospect for the number puzzle enthusiast. Using the numbers 1, 2, 3, 4 and 5 once each, with + – × ÷ available, it is possible to make the … Continue reading →

The Main Challenge Only one of the following 2-digit even numbers can be divided exactly by 6. Which one? 26  34  38  44  46  50  56  62  64  74  78  86  98 The 7puzzle Challenge The playing board of the 7puzzle … Continue reading →

The Main Challenge Your task is to arrive at the target number of 22 by adding together five numbers. You are limited to using 1-5, but these can be used any number of times. Can you find the THREE ways … Continue reading →