Value of \\sum_{r=1} ^{10}{ }^{15} {C}_{r}{ }^{35} C_{10-r is

Correct Answer is : 50C10−35C10

{ }^{50} {C}_{10}-{ }^{35} {C}_{10}

JEE Advanced 2021 Full Test 4 Paper 1

PART – III

Mathematics

SECTION – A (One Options Correct Type)
This section contains 06 multiple choice questions. Each question has four choices (A), (B), (C) and (D), out of which ONLY ONE option is correct.

Question : 37 of 54

Marks: +1, -0

Value of

∑

r=1

‌15Cr‌35C10−r is

‌10C10
‌50C10−‌35C10
‌40C10
‌40C10−1

Validate

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