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One term in 1, 2, 6, 24, 120, 620, 5040 does not fit the pattern. Which is it?

Competition practiceNumber Series

A120
B5040
C24
D620

Step-by-Step Solution

The multipliers are ×

2, \times 3, \times 4, \times 5, \times 6, \times 7

: 1, 2, 6, 24, 120, 720, 5040; so 620 should be 720.

Answer: D) 620

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