Question
A coin is tossed twice. Then, the probability that atleast one tail occurs is
BITSAT
Mathematics
Probability
2023
BITSAT 2023 (Memory Based Paper 2)
BITSAT Mathematics Question (2023) — Solution
Options
- A. 1 4
- B. 1 2
- C. 1 3
- D. 3 4
Answer
D. 3 4
Step-by-step solution
The sample space is S =\ HH , HT , TH , TT \ Let E be the event of getting atleast one tail aligned & E =\ HT , TH , TT \ \\ & Required probability p \\ & = Number of favourable outcomes Total number of outcomes = n ( E ) n ( S ) = 3 4 aligned
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