Question

Julia has a set of cards with each labelled Cat, Dog, Hamster or Rat.
a) Complete the table below to show the probability of getting a card
labelled Rat when randomly choosing a card from the set.
Label
Cat
Dog
Hamster
Rat
Probability
0.35
0.4
0.1
b) Julia chooses a card at random from her set of cards.
What is the probability that the card is labelled Cat or Hamster?
+
c) Julia's sister, Lisa, has an identical set of cards.
They both each choose one card at random from their set of cards.
What is the probability that they both choose a card labelled Dog?
+

Answer 1

Answer:

a) 0.15

b) 0.45

c) 0.16

Explanation:

a) 1-0.35-0.4-0.1=0.15

b) 0.35+0.1=0.45

c) 0.4x0.4=0.16