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Question

Two coins are lossed 1000 times and the outcomes are recorded as below: 
Number of heads 210
Frequency200550250
Based on this information, the probability for at most one head is 


A
1/5
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B
1/4
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C
4/5
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D
3/5
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Solution

The correct option is C 4/5
Total outcomes = 1000
Favourable outcomes = 800
Therefore,
Required probability = $$\dfrac{800}{1000} = \dfrac{4}{5}$$

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