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Two unbiased coins are tossed. What is probability of getting at most one tail ?
- a)1/2
- b)1/3
- c)1/4
- d)3/4
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
Two unbiased coins are tossed. What is probability of getting at most ...
Solution:
When we toss two unbiased coins, the sample space will be {HH, HT, TH, TT}.
Here, H represents a head and T represents a tail.
At most one tail means getting zero tails or one tail.
So, the favorable outcomes are {HH, HT, TH}.
Therefore, the probability of getting at most one tail is (number of favorable outcomes/total number of outcomes) = 3/4.
Hence, the correct answer is option D, i.e., 3/4.
Summary:
- Sample space of tossing two unbiased coins is {HH, HT, TH, TT}.
- Favorable outcomes for getting at most one tail are {HH, HT, TH}.
- Probability of getting at most one tail is (number of favorable outcomes/total number of outcomes) = 3/4.
When we toss two unbiased coins, the sample space will be {HH, HT, TH, TT}.
Here, H represents a head and T represents a tail.
At most one tail means getting zero tails or one tail.
So, the favorable outcomes are {HH, HT, TH}.
Therefore, the probability of getting at most one tail is (number of favorable outcomes/total number of outcomes) = 3/4.
Hence, the correct answer is option D, i.e., 3/4.
Summary:
- Sample space of tossing two unbiased coins is {HH, HT, TH, TT}.
- Favorable outcomes for getting at most one tail are {HH, HT, TH}.
- Probability of getting at most one tail is (number of favorable outcomes/total number of outcomes) = 3/4.
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Community Answer
Two unbiased coins are tossed. What is probability of getting at most ...
One coin are tossed getting probability = head or tail
where tail probability = 1/2
when two coin tossed getting probability = head or tail , tail or head
where tail probability = 2/4=1/2
option A right hai
where tail probability = 1/2
when two coin tossed getting probability = head or tail , tail or head
where tail probability = 2/4=1/2
option A right hai
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Two unbiased coins are tossed. What is probability of getting at most one tail ?a)1/2b)1/3c)1/4d)3/4Correct answer is option 'D'. Can you explain this answer?
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