Out of the given 25 consecutive positive integers, three integers are drawn. If the least integer among given 25 integers is an odd number, then the probability that the sum of the three integers drawn is an even number is
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Remember the parity rules for sums: E+E=E, O+O=E, E+O=O. For a sum of three numbers to be even, the possibilities are (E,E,E) or (O,O,E).