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excuse me, for this one: the correct answer will be B? there are not numeric values here

1 is A and 2 is B?
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Quote:

*danielasolis sends image:*
B.
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danielasolis
excuse me, for this one: the correct answer will be B? there are not numeric values here
It should be D. IMO.
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danielasolis
excuse me, for this one: the correct answer will be B? there are not numeric values here

1 is A and 2 is B?
Please follow the links for the OAs, and solutions.
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PS Question 1 - Apr 29

In a certain parking lot, 31 percent of the cars are black, 20 percent are white, 16 percent are gray, and 13 percent are silver. What is the probability that if 4 cars are randomly selected, exactly 2 will not be one of the above colors?

A. 16/625
B. 16/125
C. 96/625
D. 8/25
E. 1/2

Source: Kaplan | Difficulty: Hard
can someone please help with the solution for this and the difficulty rating it might be? 655-705?
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architkap
can someone please help with the solution for this and the difficulty rating it might be? 655-705?
Is the answer C.
Since it’s a case of exact 2 not being one of the colours. We can make 2 groups.
One having all colours(31+20+16+13) which is 80. And another is not having any of these colours which is remaining 20 percent.
We don’t need to find exact no of cars. Coz we can always calculate probability with percentages as well.
So 2 from 80 and 2 from 20.
(80c2 * 20c2)/100c4
If we solve this, we would get 96/625.
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REMINDER: We're taking a break for the weekend, so there won't be any new questions on Saturday and Sunday. Expect the next batch of questions on Monday!
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Hey can anyone help me solve this question algebraically and not by substituting values?


If 0 < q ≤ p, then for all possible values of p and q, p must be greater than which of the following?
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hello
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