Two coins are tossed 1000 times and the outcomes are recorded as below
Number of heads210Frequency200550250
Based on this information, the probability for atmost one head is:
A
15
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B
14
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C
45
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D
34
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Solution
The correct option is C45 The total number of coins tossed, n(S) = 1000 Number of outcomes in which atmost one head, n = 550 + 250 = 800 ∴Probabilityfor atmost one head = n(E)n(S)=8001000=45 Hence, the probability for atmost one head is 45.