Interview Question

User Operations Agent Interview Austin, TX

There are two children, 5 and 6 year olds who understand

  addition and subtraction. They do not understand multiplication or division. How would you explain the concept of prime numbers to them?
brain teaser

Interview Answer

1 Answer


Take 11 (prime number) objects and ask the children to split the objects into 2 groups with the same number of objects in each. Repeat the process and ask the children to split the 11 objects into 3 separate groups. There will always be one group with an extra object.

Interview Candidate on Nov 1, 2013

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