Lali tosses two different coins simultaneously. The probability that she gets at most one head is :
Answer: The probability that she gets at most one head is .
Step-by-step solution
Step 1: List all possible outcomes
When two coins are tossed simultaneously, there are four possible outcomes. Each outcome represents the result of the first coin and the second coin. 'H' stands for heads and 'T' stands for tails.
Step 2: Identify favorable outcomes
We are interested in the event of getting 'at most one head'. This means we can have zero heads or exactly one head. The outcomes with zero heads is TT, and the outcomes with exactly one head are HT and TH.
Step 3: Calculate the number of outcomes
From the sample space, the total number of possible outcomes is 4. From the event, the number of favorable outcomes is 3.
Step 4: Calculate the probability
The probability of an event is calculated by dividing the number of favorable outcomes by the total number of possible outcomes. Substituting the values, we get the probability as 3/4.
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