Math, asked by saiaravindsai52, 8 months ago

if 10Cr = 10C4r, then r is

Answers

Answered by yakubbhai1628

1

Answer:

10Cr= 120=10!=[10/120-r]!r!

=(10-r) r!= 30.240=713!(r=3)

is (r=3)

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