Răspuns:
5¹⁰=(5²)⁵=25⁵
2²⁰=(2²)¹⁰=4¹⁰=(4²)⁵=16⁵
3¹⁵=(3³)⁵=27⁵
16⁵ < 25⁵ < 27⁵
2²⁰ < 5¹⁰ < 3¹⁵
5¹⁰∈ (2²⁰,3¹⁵)