Which of the following numbers does not belong? 1,247 ; 95 ; 880 ; 2,606 ; 77 ; 1,571

Question

Which of the following words does not belong in the list, and why?
Reappear
Caucasus
Inefficiencies
Signings
Arraigning
Horseshoer
Intestines
Appeases

Answer 1

Answer 880
Calculate the digits sum of each number,
880-> 8+8+0 = 16.
The other number's sum of digits is 14.
1247-> 1+2+4+7 =14
95-> 9+5 =14
2606-> 2+6+0+6 = 14
77-> 7+7 = 14
1571-> 1+5+7+1 = 14