Question

There are seven black socks, eight blue socks, 10 white socks, and five patterned socks in the drawer. What is the probability of pulling a blue sock, replacing it, and then drawing a patterned sock out of the drawer?

Answer 1

P(drawing blue) = 8/30
P( patterned) = 5/30
these probabilities are independent so we multiply
P((blue then patterned) = 8/30 * 5 / 30 = 4/15 * 1/6 = 4/90 = 2/45

Answer 2

required prob = (8/30) * (5/30) = 2/45

Answer 3

Thanks guys :]

Answer 4

yw