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Harpreet tosses two different coins simultaneously (say, one is of $ ₹ 1 $ and other of $ ₹ 2 $ ). What is the probability that he gets at least one head?
Given:
Harpreet tosses two different coins simultaneously (one is of \( ₹ 1 \) and other of \( ₹ 2 \) ).
To do:
We have to find the probability that he gets at least one head.
Solution:
When two coins are tossed together, the possible outcomes are HH, HT, TH and TT.
This implies,
The total number of possible outcomes $n=4$.
Outcomes, where he gets at least one head, are HH, HT and TH.
Total number of favourable outcomes $=3$.
We know that,
Probability of an event $=\frac{Number\ of\ favourable\ outcomes}{Total\ number\ of\ possible\ outcomes}$
Therefore,
Probability that he gets at least one head $=\frac{3}{4}$
The probability that he gets at least one head is $\frac{3}{4}$.
Updated on: 10-Oct-2022
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