Question

Shelby is thinking of a secret number. She tells her brother that it is divisible by 3 and tells

her friend that it is divisible by 11. If Shelby is telling the truth to both of them, what is the
smallest secret number that Shelby could be thinking of?l

Answer 1

33!

Explanation:

We can use the opposite of division (multiplication) to find what this number could be.

These are the multiples of 11: 11, 22, 33, 44, 55, 66, 77, 88, 99, etc.

There are the multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, etc.

As you can see, the lowest number that is both a multiple of 3 and 11 is 33.