Question

Two coins are tossed simultaneously 500 times, following, are the outcomes:No head =100 One head =200 times Two heads =200 Times If the coins are simultaneously tossed again, compute the probability of obtaining (i) one head (i) two heads

Answer 1

Probability of one head from the data given is $\frac{200}{500}=\frac{2}{5}$
Same for two heads.

Answer 2

No: of times one head came = 200
No: of times two heads came = 200
No: of times no head came = 100

Total no: of times the coins were tossed = 200+200+100 = 500 times

$Probability = \frac{Number. of. times . it . occurred }{Total. number . of . outcomes}$

Probability that one head came = $\frac{100}{500} = \frac{1}{5}$

Probability that two heads came = $\frac{100}{500} = \frac{1}{5}$