what combination of fractions using 1,2,3,4,5,6,7,8,9,0 equals 1?

Answer 1

1/1 = 1
2/2 = 1
3/3 = 1

1/8 + 7/8 = 1
1/4 + 3/4 = 1
1/5 + 4/5 = 1

and so on --