SOLUTION: How many combinations can 26 letters, grouped into five letters, be placed in? A) 15,600 B) 230,230 C) 65,780 D) 325

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Question 1082625: How many combinations can 26 letters, grouped into five letters, be placed in?
A) 15,600
B) 230,230
C) 65,780
D) 325

Found 2 solutions by MathLover1, MathTherapy:
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
if order is not important, and if repetition not allowed, we have

26C5=+n%21%2F%28r%21%28n-r%29%21%29

26C5=26%21%2F%285%21%2826-5%29%21%29

26C5=26%21%2F%285%21%2821%29%21%29






26C5=26%2A5%2A23%2A22

26C5=65780
your answer is:
C) 65780

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

How many combinations can 26 letters, grouped into five letters, be placed in?
A) 15,600
B) 230,230
C) 65,780
D) 325