If out of 20 consecutive whole numbers two are chosen at random, then the probability that their sum is odd, is

If out of 20 consecutive whole numbers two are chosen at random, then

1.	If out of 20 consecutive whole numbers two are chosen at random, then the probability that their sum is odd, is
A.	\[\frac{5}{19}\]
B.	\[\frac{10}{19}\]
C.	\[\frac{9}{19}\]
D.	None of these
Answer» C. \[\frac{9}{19}\]

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If out of 20 consecutive whole numbers two are chosen at random, then the probability that their sum is odd, is

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