A basket contains 9 blue ribbons, 7 red ribbons and 6 white ribbons. What is the probability that a ribbon selected at random wi
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we are given
we can also write it as
now, we can use factor formula
we can use above formula
we get
now, we can simplify it
now, we can set it to 0
and then we can solve for x
now, we can use quadratic formula
now, we can plug values
and we get
So, we will get solution as
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