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42 = 20 + 22
13, 14, 15
Let the numbers be a - 1, a and a+1. Adding we get 42. This means a-1+a+a+1 = 42 ie 3a = 42 Therefore, a =42/3 = 14. Hence the consecutive numbers are 13,14 and 15. you check yourself by adding these.
None that are all odd numbers. But, there are two sets of three consecutive numbers containing a mix of even/odd that add up to 120. They are 39, 40 and 41 and also 38, 40 and 42.
3332, 3333 and 3334 add up to 9999 - there are no three consecutive numbers that add up to 10,000.