Question

There are 20 counters in a box.

6 of the counters are red.
5 of the counters are green.
The rest of the counters are blue.

Lethna takes at random one of the counters from the box.

Find the probability that she takes a blue counter.

Answer 1

9/20

Explanation:

I'm assuming you have to give the probability as a fraction :)

6 + 5 = 11

20 - 11 = 9

9/20