Question

1+9=10
2+8=10
3+7=10
4+6=10
my question is this all number additing for single time but
(5+5=10 ) 5 use two times why?​

Answer 1

Answer:

bez 10/2 become 5 means half so 5+5 =10

and do also with permutation and combination

Answer 2

Step-by-step explanation:

and do also permutdetion and combination