Number of Equations
Find the number of nonnegative integer solutions of the equation a + b + c + d = 24 where a, b, c, d are all less than the positive square root of eighty-one.
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Find the number of nonnegative integer solutions of the equation a + b + c + d = 24 where a, b, c, d are all less than the positive square root of eighty-one.
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