Asked Nov 30, 2019

Consider the five letters a,b,c,d,e. In how many distinct ways can three letters be selected and arranged if repetition is not allowed? 


Expert Answer

Step 1


         The act of arranging the members of a set into an order or sequence, if it is already in order, we want to rearrange its elements.

The formula for computing permutation is

nisthe man ber of elements in aset
ris the umber of arrangedelements to calculate

Image Transcriptionclose

where nisthe man ber of elements in aset ris the umber of arrangedelements to calculate

Step 2

Given information

Five letters a, b, c, d and e

This is a perm...

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