emugnierl17 emugnierl17

15-01-2021
Mathematics

contestada

a bag contains 3 red marbles and 4 blue marbles.
a marble is taken at random from the bag and replaced.
another marble is taken from the bag.
work out the probability that the two marbles taken from the bag are the same colour.
give answer as a fraction.

Respuesta :

mekaiferguson mekaiferguson

15-01-2021

It really should be 2/7.

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