### Brain Teasers

# 3-digit Number

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?

### Answer

The 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.

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