### Brain Teasers

# This Doesn't Seem to Add Up!

Series
Series teasers are where you try to complete the sequence of a series of letters, numbers or objects.Series

What are the four (4) missing numbers that follow the given series?

1, 2, 4, 5, 7, 8, 11, 12, 13, 14, 15, 16, ?, ?, ?, ?.

1, 2, 4, 5, 7, 8, 11, 12, 13, 14, 15, 16, ?, ?, ?, ?.

### Hint

Practice your spelling!### Answer

Missing numbers: 18, 19, 21 & 22If you spell the numbers in the series, you will discover the four missing numbers. If you take these numbers in pairs, you will find that each has the same number of letters as the other.

one, two (3)

four, five (4)

seven, eight (5)

eleven, twelve (6)

thirteen, fourteen (8)

fifteen, sixteen (7)

eighteen, nineteen (8)

twenty-one, twenty-two (9)

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