Question

Hi

Hi
tell me answer of this question in easy way but Step-by-step explanation

Answer in Easiest way or method will be brain list ​

Answer 1

21×21×21×21×21=4,084,101

Answer 2

21^5

21×21×21×21×21

or

u can guss that no from the unit digit as it is 1 thus the unit place of total will be 1.