Question

what will be match the piar for bookmark
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Answer 1

Explanation:

A girl has 5 pairs of shoes, each pair being a different style. If she selects 2 shoes at random, what is the probability they form a matching pair ?

A. 1/20

B. 1/10

C. 1/9

D. 1/5

E. 2/5

P(matching pair) = P(1st shoe is ANY shoe AND 2nd shoe matches the 1st selection)

= P(1st shoe is ANY shoe) x P(2nd shoe matches the 1st selection)

= 10/10 x 1/9

= 1/9

Answer: C

Kudos

1 kudos, 2 bookmarks

wishmasterdj

Feb 26 at 08:36pm

P(any shoe) * P (matching shoe from the remaining)

10/10 * 1/9

ps - without replacement is implied, since the shoes are limited

Kudos