There are 9 counters in a bag. 7 of the counters are green. 2 of the counters are blue. Ria takes a random two counters from the bag. Work out the probability that Ria takes one counter of each colour.

There are 9 counters in a bag.

7 of the counters are green.
2 of the counters are blue.
Ria takes a random two counters from the bag.
Work out the probability that Ria takes one counter of each colour.
You must show your working.

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There are 9 counters in a bag. 7 of the counters are green. 2 of the counters are blue. Ria takes a random two counters from the bag. Work out the probability that Ria takes one…

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