Electronics and Communication Engineering - Exam Questions Papers - Discussion
Discussion Forum : Exam Questions Papers - Exam Paper 4 (Q.No. 2)
2.
A fair coil is tossed 10 times. What is the probability that ONLY the first two tosses will yield heads?
Answer: Option
Explanation:
Use ncr, (p)r (q)n-r [for any two losses yield head].
But in present case it is required case it is only for first two tosses. Thus in this case 
10 times.
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