Answer:
At a glass vase factory, 3 out of the last 15 vases produced were chipped.
We can find the probability by using
P(E)= Total number of outcome in E/ Total number of outcome in the sample space.
The event of getting 3 vases is E = 3 vase
The sample space is given by S = {1,2,3,4…….,13,14,15}
The no. of possible outcome in the Event E is 3 vases and the no. of possible outcome in Space S is 15.
Probability of getting 3 vase is
P(3) =3/15 which is 1/5.
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