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प्रश्न
A coin is tossed twice, what is the probability that at least one tail occurs?
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उत्तर
Sample space of the given experiment
S = {HH, HT, TH, TT}
∴ Total number of possible outcomes = 4 at least
Ways of getting a tail TH, HT, TT = 3
Probability of getting at least 1 tail by tossing a coin twice = `3/4`
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संबंधित प्रश्न
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| (a) | 0.1 | 0.01 | 0.05 | 0.03 | 0.01 | 0.2 | 0.6 |
| (b) | `1/7` | `1/7` | `1/7` | `1/7` | `1/7` | `1/7` | `1/7` |
| (c) | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 |
| (d) | –0.1 | 0.2 | 0.3 | 0.4 | -0.2 | 0.1 | 0.3 |
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