A couple has 2 children. what is the probability that both are girls if the older of the two is a girl?

1 answer:

7 0

Assuming that the probability of boys and girls is equal (in reality slightly more boys than girls are born), the probability is 1/2, simply because the older girl's gender is given and therefore not a part of the probability.

This question comes from the 'boy or girl paradox', a.k.a. the Mrs Smith Problem.

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If a stadium seats 1,600 people and sells 2/4 of its seats, how many tickets does it sell

Naily [24]

Answer: 800

Step-by-step explanation:

Given: The total number of seats in the stadium : $1600$

The fraction of tickets of seats sold : $\dfrac{2}{4}$

To find the number of tickets it sold , we need to multiply the fraction of tickets of seats sold to the total number of seats in the stadium , we get

The number of tickets of seats sold : $\dfrac{2}{4}\times1600=800$