Foundation November 2020 Unit 2 Q3

(a) Circle the best expression from those below to describe the chance of it snowing in Swansea on 1st May next year. [1]

impossible     unlikely     an even chance     likely     certain

(b) Dyfrig has a bag containing identically-sized coloured balls.
There are ten black balls and ten green balls in the bag.

Dyfrig adds red balls to the bag.

Now, when Dyfrig selects a ball at random, there is an even chance of selecting a red ball.

How many red balls did Dyfrig add to the bag? [1]

(c) A fair six-sided dice is rolled and a fair coin is thrown.
Which of the following events is least likely to occur?
Circle the correct answer. [1]

Rolling a 1 on the dice

Getting a head on the coin

Rolling an odd number on the dice

Getting a tail on the coin

Rolling a prime number on the dice