MCQ
Two coins are thrown simultaneously. The probability of getting no heads is:
- A$\frac{1}{2}$
- B$\frac{1}{3}$
- ✓$\frac{1}{4}$
- DNone
✓
Answer
Correct option: C.
$\frac{1}{4}$
(c) $\frac{1}{4}$
Explanation:
Total sample space $=\{ HH , HT , TH , TT \}$
$n(S)=4$
Total favourable outcomes $=\{ TT \}$
$n(E)=1$
$\begin{array}{l}\therefore P(E)=\frac{n(E)}{n(S)} \\
=\frac{1}{4} .\end{array}$
Explanation:
Total sample space $=\{ HH , HT , TH , TT \}$
$n(S)=4$
Total favourable outcomes $=\{ TT \}$
$n(E)=1$
$\begin{array}{l}\therefore P(E)=\frac{n(E)}{n(S)} \\
=\frac{1}{4} .\end{array}$
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