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15 Jan 2021, 11:30
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B
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Difficulty:
55%
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Question Stats:
54% (01:06) correct
46%
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Five cards lettered A through E are placed in a hat. If two cards are drawn at random from the hat, what is the probability that the B and C cards will both be drawn?
(A) .05
(B) .1
(C) .125
(D) .2
(E) .4
(A) .05
(B) .1
(C) .125
(D) .2
(E) .4
15 Jan 2021, 17:08
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You can draw either B and C or C and B.
1/5 x 1/4 x 2(There can be only two different variation) = 1/10 = 0.1
1/5 x 1/4 x 2(There can be only two different variation) = 1/10 = 0.1
15 Jan 2021, 18:06
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Probability = Favorable Outcomes / Total Outcomes
Total Outcomes = We are drawing 2 cards out of 5 = 5C2 = (5 * 4) / 2 = 10
Favorable Outcomes = Drawing B and C = 1C1 * 1C1 = 1
Required probability = 1/10 = 0.1
Option B
Arun Kumar
Total Outcomes = We are drawing 2 cards out of 5 = 5C2 = (5 * 4) / 2 = 10
Favorable Outcomes = Drawing B and C = 1C1 * 1C1 = 1
Required probability = 1/10 = 0.1
Option B
Arun Kumar
