### Brain Teasers

# 1, 2, 2, 3, 2, 4, 2, 4, 3, 4, _, _, _

1, 2, 2, 3, 2, 4, 2, 4, 3, 4, _, _, _

### Hint

Which terms are 2, and which terms are odd?### Answer

2, 6, 2.They are the numbers of divisors of the positive integers. 1 has 1 divisor, 2 has 2 divisors, and so on.

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