A woman is chosen at random among all women that have two children. She is asked do you have at least one boy, and she answers 'yes.' What is the probability her other child is a boy? Assume every pregnancy has a 50/50 chance to be a boy or a girl.

Keep practicing — related questions

• I ask people at random if they have two children and also if one is a boy born on a tuesday. After a long s...
• If we encounter someone with exactly two children, given that at least one of them is a boy, what is the pr...
• How many of the following numbers are divisible by 132 ?264, 396, 462, 792, 968, 2178, 5184, 6336
• How many of the following numbers are divisible by 132 ?264, 396, 462, 792, 968, 2178, 5184, 6336
• An accurate clock shows 8 o'clock in the morning. Through how may degrees will the hour hand rotate when th...
• It was Sunday on Jan 1, 2006. What was the day of the week Jan 1, 2010?
• Other things held constant, the value of an option depends on the stock's price, the risk-free rate, and the
• A father said to his son, "I was as old as you are at the present at the time of your birth". If the father...