Answer
10.
A bag contains (n + 7) tennis balls.
n of the balls are yellow.
The o...
Mathematics, 31.08.2021 21:40 keithlavender123
Answer
10.
A bag contains (n + 7) tennis balls.
n of the balls are yellow.
The other 7 balls are white.
John will take at random a ball from the bag.
He will look at its colour and then put it back in the bag.
Write down an expression, in terms of n, for the probability that John will take a white ball.
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