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Georgia [21]
3 years ago
12

The numbers 2,3,5, 6 are written on four tiles and placed in a bag. You draw a tile and replace it back in the bag. A second til

e is withdrawn. What is the probability that the difference of the two numbers is 2?
Mathematics
1 answer:
bekas [8.4K]3 years ago
7 0
<h3>Answer:  1/8</h3>

Explanation:

The only way to get a difference of 2 is to draw a "3" and then a "5" in either order.

The probability of selecting any tile is 1/4. The probability of selecting two particular tiles in a row is (1/4)*(1/4) = 1/16 since we replaced the first tile selected.

2*(1/16) = 1/8 represents the probability of selecting a 3 and 5 in either order.

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Answer:

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Step-by-step explanation:

So we have the equation:

-\frac{1}{2}n^2+18=0

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-\frac{1}{2}n^2=-18

Multiply both sides by -2. The left cancels again:

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Take the square root of both sides:

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Since we're taking the square root, we need to use plus-minus.

Evaluate:

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So, the solutions are -6 or 6.

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Answer:

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