1.

Find the probability that getting 4 digit number with 1 in the unit place and 2 in the tens place when the numbers 1, 2, 3, 4 and 5 are arranged at random without repeating.

A. $\frac{{1}}{{5}}$$
B. $\frac{{1}}{{10}}$$
C. $\frac{{1}}{{15}}$$
D. $\frac{{1}}{{20}}$$
Answer» E.


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