A bag contains 4 red, 6 blue and 7 yellow balls. One ball is selected at random. What is the probability that it is (a) a red ball (b) blue or yellow ball ? (c) not blue ball ?
Answers
Answer:
a) Number of red balls = 4
Total number of balls = 4 + 6 + 7 = 17
Therefore probability of a red ball
= 4/17.
b) Number of the blue and yellow
= 6 + 7
= 13
Therefore probability of a blue or a yellow ball
= 13/17.
c) Total number of balls that are not blue
= Red balls + Yellow balls
= 4 + 7 = 11
Therefore probability of not a blue ball = 11/17.
Answer:
Step-by-step explanation:
total balls=17 balls
(a)probability of a red ball:
total outcomes=17
favourable outcomes=4
probability=4/17
(b)probability of yellow or blue ball:
total outcomes=17
favourable outcomes(blue)=6
favourable outcomes(yellow)=7
probability of blue ball=6/17
probability of yellow ball=7/17
(c)probability of not blue ball:
total outcomes=17
favourable outcomes=yellow balls+red balls
=7+4=11
probability of not a blue ball=11/17
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