Mathematics, 20.02.2021 18:50 thu651777p0vibf

A bag contains n counters. One counter is yellow and the rest are green.
Two counters are taken at random from the bag.
a) Express, in terms of n, the probability that both counters are green.
Give your answer as a fraction in its simplest form.
b) The probability that both counters are green is 0.9
How many green counters are in the bag?

Answers: 3

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A bag contains n counters. One counter is yellow and the rest are green.
Two counters are tak...