SAT Problem : If repetition is allowed.

January 29, 2013 Ivy Zone

How many three digit numbers can be formed using the digits  5,6,7?

(1) if repetition is allowed.

(2) if repetition is not allowed.

A. 9 , 14

B. 20 , 18

C. 27 , 6

D. 26, 22

E. 24 , 24


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