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Find the 5th Term in the Binomial Expansion (ct)n( c - t ) ^ { n }

Question 135

Multiple Choice

Find the 5th term in the binomial expansion. (ct) n( c - t ) ^ { n }


A) n!(n4) !4!cn4t4\frac { n ! } { ( n - 4 ) ! 4 ! } c ^ { n - 4 } t ^ { 4 }
B) (n4) !(n4) !4!cn4t4\quad \frac { ( n - 4 ) ! } { ( n - 4 ) ! 4 ! } c ^ { n - 4 } t ^ { 4 }
C) n!(n5) !5!cn5tn\quad \frac { n ! } { ( n - 5 ) ! 5 ! } c ^ { n - 5 } t ^ { n }
D) n!(n4) !cn4t4\frac { n ! } { ( n - 4 ) ! } c ^ { n - 4 } t ^ { 4 }
E) n!(n5) !5!cn5t5\frac { n ! } { ( n - 5 ) ! 5 ! } c ^ { n - 5 } t ^ { 5 }

Correct Answer:

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