Arrenge the functions 9/10 , 10/9 , 15/6 and 5/5 in their descending order?

Lets simplify the fraction value

9/10 = 0.9

10/9 = 1.1111111111111

15/6 = 2.5

5/5 = 1

so now arrenge the values in descending order

15/6 > 10/9 > 5/5 > 9/10