NCERT Class XI Mathematics - Probability - Solutions
© examsnet.com
Question : 25
Total: 54
A coin is tossed twice, what is the probability that atleast one tail occurs?
Solution:
An experiment consists of tossing a coin twice.
The sample space of the given experiment is given by
S = {HH, HT, TH, TT}
Let E be the event of getting atleast one tail. Then, E = {HT, TH, TT}
∴ P (E) =
The sample space of the given experiment is given by
S = {HH, HT, TH, TT}
Let E be the event of getting atleast one tail. Then, E = {HT, TH, TT}
∴ P (E) =
© examsnet.com
Go to Question: