QJEEM19Ma60f4: JEE Main 2019 Mathematics - Class 11 JEEM19Ma60f4 Solution: The number of ways of choosing 10 objects out of 31 objects of…

Question

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The number of ways of choosing 10 objects out of 31 objects of which 10 are identical and the remaining 21 are distinct, is :

Accepted Answer

²¹C₀ + ²¹C₁ + ²¹C₂ + ....... + ²¹C₁₀ =

\frac{2^{21}}{2} = 2^{20}

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