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Question

A coin is tossed $$200$$ times and head appeared $$120 $$ times. The probability of getting tail is


A
25
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B
35
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C
45
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D
15
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Solution

The correct option is A $$\dfrac{2}{5}$$
A coin tossed $$200$$ times.
Total number of times head appeared: $$120$$
Probability of getting head:  $$P(H) = \dfrac{120}{200} = \dfrac35$$
Probability of getting tail: $$P(T) = 1 - P(H) = 1-\dfrac{120}{200} = 1-\dfrac35 = \dfrac25$$

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