If a student can select 5 novels from a reading list of 20 for a course in literature (The order is important).

Use permutation since the order matters

the answer is

20P5=1,860,480

can you explain how you got the answer

permutation is given by

nPk=n!/(n-k)!

using the above formula you can easily get the answer

Alternatively using a calculator

you can obtain the answer direct by pressing

20 shift then nCr button and 5

Have you gotten?

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