Class 11 Math Algebra Sequences and series

Let $n ∈N$. If $(1+x)_{n}=a_{0}+a_{1}x+a_{2}x_{2}+...+a_{n}x_{n}$ and $a_{n−3},a_{n−2},a_{n−1}$ are in A. P then

(a)

$a_{1},a_{2},a_{3}$ are in A.P.

(b)

$a_{1},a_{2},a_{3}$are in H.P

(c)

n = 7

(d)

n = 14

Correct answer: (c)

Similar topics

determinants

matrices

binomial theorem

complex numbers and quadratic equations

sequences and series

determinants

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complex numbers and quadratic equations

sequences and series

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