Question 846662
The letters a,b,c,d are to be arranged in a row with each letter being used only once and once only. In how many ways can this be done?
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left-most letter:: 4 ways
next letter:: 3 ways
nest letter:: 2 ways
right-most letter: 1 way
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Total arrangements: 4*3*2*1 = 4! = 24 ways
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Cheers,
Stan H.
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