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08 Nov 2021, 09:01
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
75%
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Question Stats:
63% (02:46) correct
37%
(02:37)
wrong
based on 139
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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) \(\frac{3}{10}\)
A) \(\frac{3}{38}\)
B) \(\frac{7}{38}\)
C) \(\frac{15}{76}\)
D) \(\frac{23}{114}\)
E) \(\frac{3}{10}\)
08 Nov 2021, 09:17
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sjuniv32
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
= 23/114
Option D
