Question

A box contains pairs of socks of two colours (black and white). I have picked out a white sock. I pick out one more with my eyes closed. What is the probability that it will make a pair?

Answer 1

$\bigstar$ Given:

• Number of socks in the box = 4

$\bigstar$ To Find:

• Probability that it will make a pair.

$\bigstar$ Solution:

Let B and W denote black and white socks respectively.

Then, we have,

S = {B, B, W, W}

If a white sock is picked out, then,

Total no. of socks left in the box = 3

Number of white socks left = 2 – 1 = 1

Probability of getting white socks = $\sf\frac{Number\: of\: white\: socks\: left\: in\: the\: box}{ Total\: number\: of\: socks\: left\: in\: the\: box}$$=\boxed{\underline{\underline{\frac{1}{3} }}}$

Answer 2

Answer:

above answer is correct