A bag contains $4$ red discs, $10$ white discs and $6$ blue discs. Two discs are selected at r

Question

A bag contains $4$ red discs, $10$ white discs and $6$ blue discs. Two discs are selected at random from the bag, one at a time with replacement. Draw a tree diagram to illustrate the experiment. Using the tree diagram in (a), find the probability of selecting two discs of different colours.

Accepted Answer

(b) $\frac{31}{50}$

Sampling with Replacement

Sampling with Replacement

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