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Aptitude · Q28

Probability

Competitive Exams · Aptitude · question 28

Q28

Three unbiased coins are tossed. What is the probability of getting at most two heads?

A.
B.
C.
D.
Answer

Answer: Option D

Solution

Answer: Option D
Solution:
Here S = [TTT, TTH, THT, HTT, THH, HTH, HHT, HHH]
Let E = event of getting at most two heads
Then, E = {TTT, TTH, THT, HTT, THH, HTH, HHT}