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Assuming probability of having a boy is P(B) = 1/2, and of having a girl is P(G) = 1/2,
the probability of having 3 boys for 4 kids (with out regard to the girl to be the first,
second, third or fourth kid) is;
P(3B1G) = 4C3 [P(B)]4 = 4 (1/2)4 = 0.250 = 25%
The factor 4 comes because there are 4 possibilities for the order in which the girl can
come out.
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∙ 11y ago
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What is the probability of having 2 boys and 1 girl with triplets?
3/8
What is the probability of having 2 girls and 3 boys in a five child family?
1/32
What is the probability that a random couple with three children will have at least two boys?
If we consider there is a 50% chance for having a boy and 50% for having a girl*, there is : - 12,5% chance of having no boys; - 37,5% chance of having 1 boy; - 37,5% chance of having 2 boys; - 12,5% chance of having 3 boys. Therefore, there is 50% chance of having at least two boys. *The odds are more like 51% for having a boy and 49% for having a girl, but it doesn't really matters.
There are 4 boys and 3 girls What is the probability the boys and girls sit alternately?
1/35
What is the probability that a family of 5 children has exactly 3 boys?
6 out of 9.
What is the probability of having 3 children that are all boys?
1/8
What is the Probability of having 0 or 3 boys in a 3 child family?
1/4
What is the probability of having 2 boys and 1 girl with triplets?
3/8
If a couple has had 3 boys and wants to have a girl what is their probability of having a girl?
These events are independent; so the probability of a girl is 0.5.
What is the probability of having 2 girls and 3 boys in a five child family?
1/32
The probability that a family with 3 children has 3 girls assuming that having boys and girls are equally likely?
50%
What are the chances of having a girl after having 3 boys?
(assuming that the probability of having a girl or a boy is 50/50) Looking from beforehand, the probability of having three boys then a girl is the probability of each of these events happening multiplied together. That is 50% x 50% x 50% x 50% or 0.54 This would mean that the chance of having a girl after three boys is 0.0625. If you've already had the three boys though, it is a different story. The point is that previous experiences do not affect future ones; probability has no memory. Thus the probability of having a girl next is 50%, regardless of if you've had boys or girls in the past. To think otherwise is known as the gambler's fallacy, where a gambler says "black has come up 4 times in a row, it must be red next" even though the chance of red is always 50%
What is the probability that a random couple with three children will have at least two boys?
If we consider there is a 50% chance for having a boy and 50% for having a girl*, there is : - 12,5% chance of having no boys; - 37,5% chance of having 1 boy; - 37,5% chance of having 2 boys; - 12,5% chance of having 3 boys. Therefore, there is 50% chance of having at least two boys. *The odds are more like 51% for having a boy and 49% for having a girl, but it doesn't really matters.
There are 4 boys and 3 girls What is the probability the boys and girls sit alternately?
1/35
There are 9 kids at a birthday party If there are 6 girls and 3 boys at the party what fraction of the kids are boys?
9 kids total. 3 boys3 out of 9 = 3/9 = 1/3
What is the probability of having 3 baby girls in a row?
Assuming that the probability of having a baby girl is 1/2 and that of having a baby boy is 1/2, the probability of having 3 baby girls in a row is (1/2)(1/2)(1/2)=1/8.
What is the probability that a family of 5 children has exactly 3 boys?
6 out of 9.
