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Question

Question 28
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
B) 14
C) 45
D) 34


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Solution

The answer is C.
The total number of coins tossed, n(S) = 1000
Number of outcomes in which atmost one head, n = 550 + 250 = 800
Probability for atmost one head = n(E)n(S)=8001000=45
Hence, the probability for atmost one head is 45.


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