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The answer is **1 in 2313441**.

If this precisely matches your calculation, congratulations: you have passed a rudimentary test of your grade 11 math skills.

In order to generate this figure, you could always use the
counter below, but that would be a rather inefficient way to handle
the problem. The simpler way is to recognize that you have 39
choices for each of 4 numbers, so the total number of combinations
is **39*39*39*39**, or 39^4. This is the simplest type of random
probability calculation, because you can pick a number more than
once (so you don't need to multiply by successively smaller
numbers) and the order is fixed (so you don't need to divide by
all the possible orders). If the order was not fixed and you could
not pick the same number more than once, then you could do 39C4, so
your odds would be **1 in 82251**.

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