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Byju's Answer
Standard XII
Mathematics
Permutation: n Different Things Taken All at a Time When All Are Not Different.
A mathematics...
Question
A mathematics instructor plans to assign to homework three problems from a set of ten problems. How many different homework assignments are possible?
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Solution
He wanted to select
3
questions out of
10
questions
So number of ways he can select is
10
C
3
=
120
ways
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Permutation: n Different Things Taken All at a Time When All Are Not Different.
Standard XII Mathematics
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