A bag contains some counters.

• There are 300 counters in the bag.

• There are only red, white and blue counters in the bag.

• The probability of picking a blue counter is $\frac{23}{50}$

• The ratio of red counters to white counters is 2 : 1.

Calculate the number of red counters in the bag.

A bag contains some red, blue, and green counters.
There are half as many red counters as green counters.
There are 8 more blue counters than red counters.

There are 32 counters in total.

One counter is picked at random from the bag.

Work out the probability that the counter picked is not green.

This question has 2 part(s).

There are only red counters, blue counters, green counters and yellow counters in a bag.

The table shows the probabilities of picking at random a red counter and picking at random a yellow counter.

The probability of picking a blue counter is the same as the probability of picking a green counter.

Complete the table.