Mr. and Mrs. Crazy: SquimesMath brain teasers require computations to solve.Mr. and Mrs. Crazy were just one step away from winning the $1,000,000 prize in the contest. In order for them to win, they must answer this question:
What are the only ten 8-digit squimes? In case you don't know what a squime is, it is any number that: -has no zero -has all different digits -starts and ends with a single-digit prime or single-digit square number -each pair of consecutive digits is a square or prime Mr. and Mrs. Crazy solved it and won one million dollars. What were their answers? 
HintA squime cannot contain the number 8 since no square or prime ends with 8.The largest squime has at most eight digits, since it cannot contain 8 or 0. If we use 2, it must come first because no square or 2-digit prime ends in 2. No 2-digit prime ends in 5 and only 25 is square. If, therefore, we use 5, it must come after 2. So we begin with 25. Hide What Next?
Tweet
See another brain teaser just like this one... Or, just get a random brain teaser If you become a registered user you can vote on this brain teaser, keep track of which ones you have seen, and even make your own. Comments
Back to Top |
