If n C 2 - n C 3 - 6 C 3 and n C x - n C 3 -x- 3 then the value of x is

The correct option is B 2 Given, _ #160;^ n C _ 2 + _ #160;^ n C _ 3 = _ #160;^ n C _ 3 ⇒ n=5[ ∵ _ #160;^ n C _ r + _ #160;^ n C ...

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Combination

If n C 2 + ...

Question

If ${^{n} C}_{2} + {^{n} C}_{3} = {^{6} C}_{3}$ and ${^{n} C}_{x} = {^{n} C}_{3}, x \neq 3$ then the value of $x$ is

5

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4

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2

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6

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1

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Solution

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Similar questions

^{n + 1} C_{3} = 4^{n} C_{2}

n =

\frac{{^{n} C}_{1}}{2} + \frac{{^{n} C}_{3}}{4} + \frac{{^{n} C}_{5}}{6} + . . .

^{2 n} C_{3}

^{n} C_{2}

44 : 1

n

C_{0} - \frac{C_{1}}{2} + \frac{C_{2}}{3} - \frac{C_{3}}{4} + . . . + {(- 1)}^{n} \frac{C_{n}}{n + 1} = \frac{1}{n + 1}

^{n - 1} C_{3} +^{n - 1} C_{4} >^{n} C_{3}

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