Identifying Rational Numbers
Which of the numbers in the following set are rational?
500, -15, √2, 1/4, 0.5, -2.50, π
A
500, -15, 1/4, 0.5, -2.50
B
500 only
C
500, -15, √2, 1/4, 0.5, -2.50, π
D
500, -15, 0.5, -2.50, π
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