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Prove that in throwing a pair of dice...

Prove that in throwing a pair of dice, the occurrence of the number 4 on the first die is independent of the occurrence of 5 on the second die.

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Here, `4` will occur on first die.
But, it will not impact any of the occurance of second die.
Second die can contain any number between `1` and `6` including `5`.
As, number occuring on first die do not have any impact on number occuring `5`,
Therefore, the occurrence of the number `4` on the first die is independent of the occurrence of `5` on the second die.
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