Question

On a busy road in a city the number of persons sitting in the cars passing by were observed during a particular interval of time. Data of $60$ such cars is given in the following table.

No. of persons in the car	$1$	$2$	$3$	$4$	$5$
No of Cars	$22$	$16$	$12$	$6$	$4$

Suppose another car passes by after this time interval. Find the probability that it has at least $4$ persons in it

• A. $\frac{1}{6}$
• B. $\frac{1}{12}$
• C. $\frac{1}{10}$
• D. None of these

Answer 1

The correct option is A $\frac{1}{6}$

$P$(at least $4$) $=\frac{(4+5)}{Total}$

$=\frac{6+4}{60}=\frac{1}{6}$