31 and 32
63 and 64
20,21 and 22 are three consecutive integers whose sum is 63. 20+21+22
-19, -21, -23
19 + 21 + 23 = 63
They are are 62, 63 and 64.
-22, -21, -20
63+65+67 !
The "natural numbers" are the ones you use to count . . . 1, 2, 3, 4, etc. Consecutive natural numbers are two or more of them that occur together as you count, with no holes or spaces in the group. 23, 24, and 25 are consecutive natural numbers. 63 and 64 are consecutive, but 63, 64, and 67 are not.
66
The numbers are 61, 63 and 65.
The numbers are 57, 59, 61 and 63.
They are 64, 65 and 66 as well as a set of consecutive odd integers: 63, 65 and 67.