How many numbers can be formed from the digits 1, 2, 3, 4 when the repetition is not allowed

\[^{4}{{P}_{1}}{{+}^{4}}{{P}_{2}}{{+}^{4}}{{P}_{3}}\]

\[^{4}{{P}_{1}}{{+}^{4}}{{P}_{2}}{{+}^{4}}{{P}_{3}}{{+}^{4}}{{P}_{4}}\]

How many numbers can be formed from the digits 1, 2, 3, 4 when the rep

1.	How many numbers can be formed from the digits 1, 2, 3, 4 when the repetition is not allowed
A.	\[^{4}{{P}_{4}}\]
B.	\[^{4}{{P}_{3}}\]
C.	\[^{4}{{P}_{1}}{{+}^{4}}{{P}_{2}}{{+}^{4}}{{P}_{3}}\]
D.	\[^{4}{{P}_{1}}{{+}^{4}}{{P}_{2}}{{+}^{4}}{{P}_{3}}{{+}^{4}}{{P}_{4}}\]
Answer» E.

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How many numbers can be formed from the digits 1, 2, 3, 4 when the repetition is not allowed

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