Question

There coins are tossed simultaneously . what is the probability of getting atleast two heads?

Answer 1

If three coins are tossed then possible outcomes are : 

HHH , HHT , HTH , THH , HTT , THT , TTH , TTT

So total number of outcomes = 8

Favorable out comes for getting at least 2 heads are : 

HHH , HHT , HTH , THH

So number of favorable outcomes = 4 

Thus , P(Getting at least 2 heads) = `"Number of favourable outcomes"/"Total number of outcomes"` = `4/8` = `1/2`