# An urn contains 5 red& 2 black balls. Two balls are randomly selected. Let X represents the number of black balls, what are the possible values of X?

The possible values of X are 0, 1 and 2.

The urn contains seven balls: 5 red and 2 black. If two balls are randomly selected, it's possible that they will both be red (in which case there will be zero black balls), or that one will be red and one black, or that they will both be black.

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The possible values of X are 0, 1, and 2.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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