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# Which of the following cannot be the probability of an event? (A) $$\frac{2}{3}$$ (B) $$- 1.5$$ (C) $$15 %$$ (D) $$0.7$$

$$\because$$ The probability of an event E is a number P(E) such that
$$0 \ \le \ P(E) \ \le \ 1$$
$$\therefore$$ -1.5 cannot be the probability of an event.
$$\therefore$$ (B) is the correct answer.