Answer:
in steps
Step-by-step explanation:
If it is a fair roulette, the probability to land on RED should be the same no matter what results are in the previous spin
a) 18/38
b) 18/38
c) Yes, I'm confident of the answers. Because it's fair and there is no change of RED numbers.
Answer:
Step-by-step explanation:
Combinatorial explanation:
The n balls have to be arranged in n positions and the only distinction is where are the black and where white balls are.
We can choose the position of black balls in 
ways, therefore, white ones are on the remaining positions.
Using binomial we can have explanation written below:
The balls can be arranged in n! possible permutations.
To be precise one particular arrangement includes 
permutations. Since r black balls can be permuted in r! ways and white balls in (n-r)! different orders.
So basically it yields,
permutations.
So the actual amount is,
Answer:
Step-by-step explanation:
the answer is 4/5
Because there are 5 section and the blueberry takes up 4 of the sections it is 4/5
Answer:
area = 21 feet^2
Step-by-step explanation:
Area of a triangle is 1/2(base*height)
1/2(6*7) = area
1/2(42) = area
area = 21 feet^2
