Permutation: n Different Things Taken All at a Time When All Are Not Different.
No. of ways o...
Question
No. of ways of selecting none or more of 10 identical things is
A
1
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B
10
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C
11
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D
9
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Solution
The correct option is C 11 0 things -- 1 way 1 things -- 1 way | | | 10 things -- 1 way ∴ total number of ways of selecting none or more of 10 identical things is 11