A bag contains 20 clip-on bicycle bells. Some are red and some are blue. A
bell is chosen at random from the bag. R is the event ‘picking a red ball’.
If P(R’) = 1⁄4, find the number of red bicycle bells in the bag.
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Step-by-step explanation:
one of the balls is selected at random from bag what is the probability of getting ... W + B + R = 50 ... Number of red balls is 50-12(3) = 14. X=3B=x=3w=11x=11× 3=33R=50-12x =50-12×3 =50-36 = 14now event A for red ballso, ...
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Answer:
15 bells
Step-by-step explanation:
P(R') = Blue = 1/4
P(R) = Red = ? ------> 4/4 - 1/4 = 3/4
Therefore, 3/4 x 20 = 60/4 = 15 bells.
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