A man is completing a numerical series using reasoning.

Numerical Series IQ Test

This numerical series IQ tests will assess your ability for inductive and deductive reasoning. Numerical reasoning ability has been considered a significant component of human intelligence for many decades.

To separate as much as possible between the ability to perform complex arithmetic operations and the ability for numerical reasoning, we use only the four most straightforward arithmetic operations.

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Numerical Series IQ Test
Complete the numerical series pattern.
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1, 1, 2, 4, 6, 18, 21, 84, ?