
Lite 
A Unique Series
What number completes this series?
0, 1, 2, 4, 5, 6, 8, 10, 40, 46, 60, 61, 64, 80, 84, ?
Hint:
Think of the names of the numbers (ZERO, ONE, ...). Compare them to the names of the numbers that are not in the series (THREE, SEVEN, ...).
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