Question 890262
How many ways are there of choosing 5 letters, without replacement, from 16 distinct letters, if
 the order of the choices is taken into consideration?
Ans: 16P5 = 16*15*14*13*12
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 the order of the choices is not taken into consideration?
Ans: 16C5 = (16*15*14*13*12)/(1*2*3*4*5) 
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Cheers,
Stan H.
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