Let S = {2, 3, 4, 5, 6, 7, 9}. How many ...

Let `S = {2, 3, 4, 5, 6, 7, 9}`. How many different 3-digit numbers (with all digits different) from S can be made which are less than 500?

A

30

B

49

C

90

D

147

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