Question

There are 11 counters in a bag. 6 of these counters are green. 5 of these counters are red. Some more red counters are put into the bag. A counter is then taken at random from the bag. The probability that the counter is red is: a) 5/11 b) 6/11 c) 7/11 d) 8/11

Answer 1

a) 5/11

Explanation:

Since there are 11 counters, one counter is 1/11 of the total. We have 5 red counters so that makes up 5/11 of the bag, making the probability 5/11.