How many numbers less than 1000 can be made from the digits 1, 2, 3, 4, 5, 6 (repetition is not allowed)

How many numbers less than 1000 can be made from the digits 1, 2, 3, 4

1.	How many numbers less than 1000 can be made from the digits 1, 2, 3, 4, 5, 6 (repetition is not allowed)
A.	156
B.	160
C.	150
D.	None of these
Answer» B. 160

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How many numbers less than 1000 can be made from the digits 1, 2, 3, 4, 5, 6 (repetition is not allowed)

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