A bag contains n counters.
One counter is blue and the rest are red.
Two counters are taken...
![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 28.04.2021 23:20, vanessam16
A bag contains n counters.
One counter is blue and the rest are red.
Two counters are taken at random from the bag.
a) Express, in terms of n, the probability that a counter of each colour is taken.
Give your answer as a fraction in its simplest form.
b) The probability that a counter of each colour is taken is 0.125
How many red counters are in the bag?
![answer](/tpl/images/cats/otvet.png)
Answers: 3
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