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Find the R Th Term in the Binomial Expansion (c+y)n( c + y ) ^ { n }

Question 123

Multiple Choice

Find the r th term in the binomial expansion. (c+y) n( c + y ) ^ { n }


A) n!(nr) !r!cnr+1yr1\quad \frac { n ! } { ( n - r ) ! r ! } c ^ { n - r + 1 } y ^ { r - 1 }

B) n!(nr) !r!cnryr\frac { n ! } { ( n - r ) ! r ! } c ^ { n - r } y ^ { r }

C) n!(nr+1) !(r1) !cnryr1\frac { n ! } { ( n - r + 1 ) ! ( r - 1 ) ! } c ^ { n - r } y ^ { r - 1 }

D) n!(nr+1) !(r1) !cnr+1yr1\frac { n ! } { ( n - r + 1 ) ! ( r - 1 ) ! } c ^ { n - r + 1 } y ^ { r - 1 }
E)
n!(n+r1) !(r+1) !cn+r1yr+1\frac { n ! } { ( n + r - 1 ) ! ( r + 1 ) ! } c ^ { n + r - 1 } y ^ { r + 1 }

Correct Answer:

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