I learned probability a few years ago, but I'm not quite sure how to solve this. Can someone please lend me some knowledge?

Mathematics

2 answers:

myrzilka [38]3 years ago

5 0

Answer:

the answer will be 1/11

Step-by-step explanation:

5+2+4+1=12 and 12 two out or 12 of them will be pulled and if you think about it 8 out 4 white marbles

lutik1710 [3]3 years ago

4 0

There are 12 marbles in total. 4 of them are white.

The probability of getting a white marble on the first try is 4/12 or 1/3.

The probability of getting a second white marble in a row? Since you already pulled out a white marble on the first attempt, there are now 3 white marbles and 11 marbles in total. So the probability of getting a white marble at this point is 3/11.

Thus the probability of doing this back to back is 1/3 * 3/11 or 3/33 or 1/11.

The answer is B.

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sergiy2304 [10]

Answer:

Step-by-step explanation:

a = age

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now move a's with a's and the numbers that don't have a variable with each other
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now subtract
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I hope it helps you!