Question

The coefficient of t⁴ in the expansion of [(1 - t⁶)/(1 - t)]³
is
(A) 12 (B) 15
(C) 10 (D) 14

Answer 1

Answer:

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The coefficient of t⁴ in the expansion of [(1 - t⁶)/(1 - t)]³

is

(A) 12

(B) 15✔

(C) 10

(D) 14