Math, asked by Subhash8411, 1 year ago

If 8Cr-7C3=7C2 find r

Answers

Answered by shivshankar66
11
ans.... . s.. ss.. ss.
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Answered by sg2544
3
hello mate!....


given.... \\ 8cr - 7c3 = 7c2 \\ 8cr = 7c2 + 7c3 \\ we \: know....... \\ n + 1cr  = ncr+ncr-1 \\ 8Cr=8C3<br />soo..<br />r=3<br /> \\ HOPE  \: IT  \: HELPS  \: U \:  DEAR.....
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