February 27, 2017

Homework Help: Maths

Posted by bubbie on Thursday, May 23, 2013 at 6:13pm.

A locker combination has four nonzero digits. If no digit can be repeated and the first three digits are 1-2-3, what is the probability that the fourth digit is 4?

A. 1/6
B. 1/7
C. 1/8
D. 1/9

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