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10 Nov 2023, 03:32
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
96% (01:31) correct
4%
(02:47)
wrong
based on 75
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There are 7 red balls and 5 blue balls in a jar. If 3 balls are selected from the jar, what is the probability that 3 balls selected are red balls?
A. 19/44
B. 5/44
C. 3/41
D. 13/44
E. 7/44
A. 19/44
B. 5/44
C. 3/41
D. 13/44
E. 7/44
10 Nov 2023, 04:37
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Bunuel
OA is E
Posted from my mobile device
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11 Nov 2023, 11:38
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The probability of choosing 3 balls from red balls = (7/12)*(6/11)*(5/10)=7/44.
Point to remember, the total number of balls and the total number of red balls decrease when 1 ball is selected from the pot.
Point to remember, the total number of balls and the total number of red balls decrease when 1 ball is selected from the pot.
