Question

Two coins are tossed simultaneously. What is the probability of getting at least one head?

Answer 1

SOLUTION :  

Given : Two coins are tossed simultaneously  

If two coins are tossed then the possible outcomes are : HT, HH, TT, TH

Total no. of possible outcomes = 4

Let E = Event of getting at least one head

Outcomes favourable to  E = HT, HH, TH

No. of favorable outcomes = 3

Probability (E) = Number of favourable outcomes / Total number of outcomes

P(E) = ¾  

Hence, the required probability of getting at least one head ,P(E) = ¾.

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Answer 2

total outcomes = 2
event is =1
so probability is equal to =
$\frac{1}{2}$