Question

Which of the following cannot be the probability of an event?

(A) $\frac{2}{3}$

(B) $-1.5$

(C) $15\%$

(D) $0.7$

• A. $\frac{2}{3}$
• B. $-1.5$
• C. $15\%$
• D. $0.7$

Answer 1

The correct option is B

$-1.5$

Explanation for the correct option:

Option (B): Determine the digit that cannot be the probability of an event.

An event's probability is always between $0$ and $1$.

The digit $-1.5$ cannot be the probability of an event since the probability of an event cannot be negative.

Hence, option (B) is correct.

Explanation for the incorrect options:

Option (A), (C), and (D): Since $\frac{2}{3},15\%,\mathrm{and}0.7$ lies in between $0$ and $1$, $\frac{2}{3},15\%,\mathrm{and}0.7$ can be the probability of an event.

Therefore, options (A), (C), and (D) are incorrect.

Hence, option (B) is correct.