Mathematics
NULL
Medium
Question
A box contains 3 blue, 4 red, 6 green and 2 yellow marbles. If four marbles are picked at random, what is the probability that none is blue?
A
17/91
B
33/91
✓ Official correct answer
C
51/91
D
65/91
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
17/91
No member explanations yet for this option.
B
33/91
No member explanations yet for this option.
C
51/91
No member explanations yet for this option.
D
65/91
No member explanations yet for this option.
Explanation
C(12,4)/C(15,4) = 495/1365 = 33/91.