if 15c3r=15cr+3 find r
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if 15C3r = 15Cr+ 3, find the value of r
If 15C3r = 15Cr+ 3 , then we follow the formula: Cx = nCy where x = y OR x + y = n. r cannot be a fraction since this will give us 1.5 therefore the answer will be r = 3.
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