There are 3 strawberry yoghurts, 2 peach yoghurts and 4 cherry yoghurts in a fridge.
2 answers:
Step-by-step explanation:It says:
There are 3 strawberry yoghurts, 2 peach yoghurts and 4 cherry yoghurts in a fridge.
Kate takes a yoghurt at random from the fridge.
She eats the yoghurt.
She then takes a second yoghurt at random from the fridge.
Work out the probability that both yoghurts were the same flavour.
There is a 3/9 = 1/3 chance that she takes 1 strawberry. So there is a 1/3*1/3 = 1/9 chance that she gets two. Peach== 2/9*2/9 = 4/81 chance of two And cherry == 4/9*4/9 = 16/81 of two. So 1/9 + 4/81 + 16/81 = 9/81 + 4/81 + 16/81 = 29/81 = 0,358 chance
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