Q1. A family has 2 children, then the probability of the event that atleast one of them is boy is:
a. 1/4 b. 1/2 c. 1/3 d. 3/4
Q2. A student is attempting to log on internet with 0.5 chance of successful attempt in each trail. The average no of attempts required to log on successfully is:
a. 1 b. 2 c. 3 d. 4


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