Author Archives: 7puzzle

Today’s Challenge Using each of the numbers 0.5, 1, 1.5 and 2 once each, with the four arithmetical operations + – × ÷ available, can you arrive at the target answer of 7? For the number puzzle enthusiast, can you find a second way … Continue reading →

Today’s Challenge Starting from ONE, what is the 7th whole number, when written in English, that does NOT contain the letter ‘E’? The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from … Continue reading →

Today’s Challenge Read the following ten clues about a particular number: it’s less than 100, it’s one more than a multiple of 3, exactly one of its two digits is prime, you get a prime if you reverse its digits, it’s … Continue reading →

Today’s Challenge There are two rules to consider when calculating the NEXT number in our special sequence:  if it’s EVEN, halve it  if it’s ODD, add 1 For example, if starting at 50, the sequence would be:   50    25 … Continue reading →

Today’s Challenge When each letter of the English alphabet is given a numerical value, A=1 B=2 C=3 . . . Z=26, and the values of the individual letters are added together, which day of the week has the highest total and … Continue reading →

Today’s Challenge Study the seven clues below and place the numbers 1-9 into the nine positions. Each number should appear exactly once in this grid. x              x              x … Continue reading →

Today’s Challenge Can you place the numbers 0, 1, 1, 2, 2, 3, 3, 4, 6, 6, 7 and 7 into the 12 gaps below so that all three lines work out arithmetically? ◯  +  ◯   =    2 … Continue reading →

Today’s Challenge Using the numbers 3, 5 and 5 once each, with + – × ÷ available, which four numbers from the following list are NOT mathematically possible to make? 1   2   3   4   7   10   13   15   18   20   22  … Continue reading →

Today’s Challenge Your task is to arrive at the target answer of 18 by using each of the four numbers 2, 6, 7 and 10 exactly once each, with + – × ÷ available. Can you find two ways of … Continue reading →

Today’s Challenge List SEVEN different positive whole numbers that total 100 and follow these rules: each number must be at least 4 away from its nearest neighbour, the list must contain at least three square numbers. Can you find at least … Continue reading →