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Questions  

The value of 50C4+r=1656rC3  is

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By Expert Faculty of Sri Chaitanya
a
55C4
b
55C3
c
56C3
d
56C4
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detailed solution

Correct option is D

50C4+r=1656rC3=50C4+55C3+54C3+53C3+52C3+51C3+50C3

=(50C4+50C3)+51C3+52C3+53C3+54C3+55C3

=(51C4+51C3)+52C3+53C3+54C3+55C3

On continuing the process, we get 56C4


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