Question

Three coins are tossed simultaneously for $1000$ times and outcomes are noted

$3$ heads	$2$ heads	$1$ head	No head
$30$	$200$	$220$	$280$

Find the probability of getting
i) $2$ head
ii) More than $1$ head

Answer 1

Total outcomes $=1000$

(i) Number of outcomes with $2$ heads $=200$

Probability $=\frac{200}{1000}=\frac{1}{5}$

(ii) Number of outcomes with more than $1$ head $=30+200=230$

Probability $=\frac{230}{1000}=\frac{23}{100}$