Question

Which of the following can be the probability of an event?

• A. $\frac{2}{5}$
• B. 3.2
• C. $50\%$
• D. -0.6

Answer 1

Answer: (A), (C)

The probability of an event lies between ' 0 ' and ' 1 ' i.e., $O<P(E)<1$
Option A
$\frac{2}{5}=0.4$(True)
$\{\because 0\le 0.4\le 1\}$
Option B
3.2(False)
$0<1<3.2$
Option C
$50\%$
$\frac{50}{100}=\frac{1}{2}\Rightarrow 0\le \frac{1}{2}\le 1$(True)
Option D
$-0.6$
$1\therefore$ the probability of an event cannot be negativel (False)
$-0.6\le 0\le 1$