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Problem Solving (PS) | Re: Jasmine has 20 jazz records in her collection, 6 of which feature Mile

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sjuniv32 wrote:

Jasmine has 20 jazz records in her collection, 6 of which feature Miles Davis, and will choose three of these records at random to bring to a party. What is the probability that she brings at least two records which feature Miles Davis?

A)\(\frac{3}{38}\)

B)\(\frac{7}{38}\)

C)\(\frac{15}{76}\)

D)\(\frac{23}{114}\)

E)\(\frac{3}{10}\)


She can either brings 3 records of Miles Davis or 2 records of Miles Davis and 1 out of 14 records

Required probability = (6C3 + 6C2 * 14C1)/ 20C3
= (20 + 15*14)/ 1140

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