You said there were 40 yellow carsso 40×9 is 360
Answer:
0.143
Step-by-step explanation:
From counting principle, we can say that:
There are 7! ways of the 7 people to arrive first. Any one of them can come first. But, what is the probability that Xerxes with arrive first?
We take that Xerxes is the first one to arrive, then from the 7 - 1 = 6 remaining people, they can arrive in 6! ways. So
Probability Xerxes arrives first = 6!/7! = 0.1429
Rounding to 3 decimal places, it will be:
<u>Probability Xerxes arrives first = 0.143</u>
Answer:
1.A,B,C,D
2. AB, CD
3. AC, BD
4. Line AD (don't take my word for this one)
Step-by-step explanation:
It is.
To be divisible by 6, it has to be divisible by 2 and 3.
It's an even number so divisible by 2.
The sum of the digits is divisible by 3 so number is divisible by 3.
In the word replacement, there are 11 letters.
4 of them are vowels : e, a, e, e
7 of them are not vowels : r, p, l, c, m, n, t
The probability of getting a vowel the first try is 4/11.
The probability of getting something that is not a vowel is 7/10. The denominator is one less because the vowel card is not replaced, meaning there is one less card to choose from.
Multiply.
4/11*7/10
=28/110
=14/55
The probability is 14/55.
Hope this helps!
