sir,how could this be solved,
there are 10 pairs of socks,in a cupboard from which 4 individual socks are picked at random.the probablity that there is at least one pair is.

The sample space would be 20C4. The number of ways of picking 4 socks with no matching pair would be 20 x 18 x 16 x 14 / 4!. Find the probability accordingly. Then, the probability of at least one pair is 1 – the above.

sir,how could this be solved,

there are 10 pairs of socks,in a cupboard from which 4 individual socks are picked at random.the probablity that there is at least one pair is.

The sample space would be 20C4. The number of ways of picking 4 socks with no matching pair would be 20 x 18 x 16 x 14 / 4!. Find the probability accordingly. Then, the probability of at least one pair is 1 – the above.

regards

J