A box contains 24 identical balls, of which 1 | vedclass

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(c) To get $3$ white balls in first $6$ draw and then a white again in $7^{th}$ draws.

$P = {}^6{C_3} 	imes {\left( {\frac{1}{2}} ight)^3}\left(

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$\frac{5}{{32}}$

Vedclass · Answer

(c) To get $3$ white balls in first $6$ draw and then a white again in $7^{th}$ draws.

$P = {}^6{C_3} 	imes {\left( {\frac{1}{2}} ight)^3}\left( {\frac{1}{2}} ight){m{ }}\left( {\frac{1}{2}} ight) \Rightarrow P = \frac{5}{{32}}$.

A box contains $24$ identical balls, of which $12$ are white and $12$ are black. The balls are drawn at random from the box one at a time with replacement. The probability that a white ball is drawn for the $4^{th}$ time on the $7^{th}$ draw is

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