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Solve Question Number 38 Brifily.

Asked by hemanttkumarr 1st December 2017, 10:16 PM
Answered by Expert
Answer:
begin mathsize 16px style If space you space use space formula space of space straight C presuperscript straight n subscript straight r equals fraction numerator straight n factorial over denominator straight r factorial open parentheses straight n minus straight r close parentheses factorial end fraction
and space straight C presuperscript straight n subscript straight r minus 1 end subscript equals fraction numerator straight n factorial over denominator open parentheses straight r minus 1 close parentheses factorial open parentheses straight n minus straight r plus 1 close parentheses factorial end fraction
Put space it space in space the space LHS space and space solve space you space will space get space the space answer.
end style
Answered by Expert 2nd December 2017, 5:09 PM
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