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Hey boys and girls.
I've recently been getting really nervous about the probability portion of the math section.
I understand easy probability like what are the chances of rolling a 4 on a die consecutively....but when do we exactly do the following:
1. Permutations like: 5! or some things like (5!)/(2!)(3!)
2. When do we multiply probabilities together. Like if there's 4 boys how many ways can we put them in order. Is it 4x4?
3. There are also random permutation equations that confuse me a lot
So the general question is...are there easy ways to remember certain probability formulas?
Cheers!
I've recently been getting really nervous about the probability portion of the math section.
I understand easy probability like what are the chances of rolling a 4 on a die consecutively....but when do we exactly do the following:
1. Permutations like: 5! or some things like (5!)/(2!)(3!)
2. When do we multiply probabilities together. Like if there's 4 boys how many ways can we put them in order. Is it 4x4?
3. There are also random permutation equations that confuse me a lot
So the general question is...are there easy ways to remember certain probability formulas?
Cheers!