SOLUTION: Bert has 10 books and he wants to give 2 of these books to his sister. How many different gifts are possible?
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Question 1118255: Bert has 10 books and he wants to give 2 of these books to his sister. How many different gifts are possible?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Number of combinations of ten things taken two at a time.
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