#### A letter is chosen from the word ‘TRIANGLE’. What is the probability that it is a vowel?

**Solution:**

#### A bag contains 5 red, 6 black and 4 white balls. A ball is drawn at random from the bag, find the probability the ball is drawn is

(i) white

(ii) not black

(iii) red or black

(iv) neither red nor black

**Solution:**

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