4MA0 Foundation January 2018 Paper 1R Q10

EdexcelFoundationOld spec5 marksBasic Probability

10 Jim puts 4 white tiles and 3 grey tiles into a bag.
Each tile has a letter on it.

White tiles A, B, B, C and grey tiles A, B, C

Jim takes at random a tile from the bag.

(a) Write down the letter that Jim is most likely to take. (1)
(b) Write down the probability that the tile is grey with the letter C on it. (1)
(c) Write down the probability that the tile does not have the letter A on it. (1)

Jim puts the tile back into the bag.
He then puts more grey tiles into the bag.
Each of these tiles has the letter C on it.
Alice takes at random a tile from the bag.

The probability that this tile has the letter C on it is \(\dfrac{1}{2}\)

(d) Work out the probability that the tile Alice takes is grey with the letter C on it. (2)
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