Solution set of ^{10}{C_{x - 1}} > 2.{^{10}}{Cₓ} is

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6.Permutation and Combination

easy

The solution set of $^{10}{C_{x - 1}} > 2\;.{\;^{10}}{C_x}$ is

A

$ \left \{ 1,2,3, \right \}$

B

$\left \{4,5,6,\right \}$

C

$\left \{8,9,10,\right \}$

D

$\left \{ 9,10,11,\right \}$

Solution

(c) It is obvious and can be checked by putting the values. Since other three sets do not hold good.

Standard 11

Mathematics

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