3-digit NumberMath brain teasers require computations to solve.
There's a 3-digit number. The sum of its digits is 10, the product of its digits is 20, and it is divisible by 7. What is the 3-digit number?
AnswerThe 1-digit factors of 20 are 1, 2, 4 and 5, therefore, the number is made up of 1, 4 and 5.
Out of the six numbers formed by the 3 digits, 145, 154, 415, 451, 514 and 541, only 154 is divisible by 7.
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.
Back to Top