A probability problem by A Former Brilliant Member

Probability Level 1

How many permutations can be made out of the letters in the word ABLUTION taking four letters at a time?


The answer is 1680.

A Former Brilliant Member by A Former Brilliant Member

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2 solutions

Christopher Ho
Mar 18, 2017

We have 8 choices for the first, 7 for the next, 6 for the following, and 5 for the last one. Multiplying these gives us 1680.

2 Helpful 0 Interesting 0 Brilliant 0 Confused

no. of permutations = 8P4 = 1680

1 Helpful 0 Interesting 0 Brilliant 0 Confused

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