Table of Contents
What is the probability of having 2 sons?
The number of families with a boy born on a Monday is 7 + 7 + 1 + 6 + 6 = 27. Of these, 13 have two boys, so the probability of having two boys is 13/27, which is about 48 per cent. 4.
What is the probability of selecting a boy?
This means that the probability of choosing a boy OR an A student is 1 – 3/14, or 11/14.
What are the chances of having 5 sons?
If you already have a boy, the chance that the next baby is also a boy is 50 percent
| All same sex | Different sexes | |
|---|---|---|
| 4 children | 12.5\% all girls or all boys | 37.5\% 1B/3G or 1G/3B |
| 5 children | 6.25\% all boys or all girls | 25\% BBBB/G or GGGG/B |
| 6 children | 3.125\% all boys or all girls | 12.5\% BBBBB/G or GGGGG/B |
What is the probability that a student chosen at random out of 3 girls and 4 boys is a boy?
There are 3 girls and 4 boys. So the probability that a student chosen is a boy is 4/7.
What is the probability of getting at least 6?
So the probability of getting at least one 6 is 1 minus this or about 0.666. Note: It turns out this probability is roughly the same for any similar problem where you have a 1/n chance for an event and you try n times.
How likely is it to have 6 boys in a row?
What is the probability of an event that is certain to happen?
An event that is certain to happen has a probability of 1. An event that cannot possibly happen has a probability of zero. If there is a chance that an event will happen, then its probability is between zero and 1.
What is an example of a probability?
Probability is the likelihood or chance of an event occurring. For example, the probability of flipping a coin and it being heads is ½, because there is 1 way of getting a head and the total number of possible outcomes is 2 (a head or tail). The probability of something which is impossible to happen is 0.
What is the probability of having a boy and a girl?
To get a more precise figure we should really take these facts into account. But as a rough guide a probability of 1 2 for a boy and a girl and that the sex of one child is independent of the sex of the other children would be close enough.
What is the probability of having at least one child?
To have at least one child of each sex, we need to subtract out from the 8 ways the genders can be the 2 that are single sex (i.e. all boys and all girls). So we get: Roy Ø. It is customary to say that the probability of getting a boy is 1 2.
How many ways can you have a boy and a girl?
Of those 6 ways, half will be for having 2 boys and 1 girl and the other half will be for having 2 girls and 1 boy. To have at least one child of each sex, we need to subtract out from the 8 ways the genders can be the 2 that are single sex (i.e. all boys and all girls).
How many different ways can you have a baby?
We know too that of those 8 ways, 2 are for where all three children are the same gender, leaving 6 ways. Of those 6 ways, half will be for having 2 boys and 1 girl and the other half will be for having 2 girls and 1 boy.
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