Question

Find the unit's digit of the cube of $5022$.

Answer 1

Unit's digit in the cube of $5022$ would be equal to the unit's digit of the cube of the digit at unit's place of that number.

$\therefore$ for the number $5022$ the digit at unit's place is $2$.

$\Rightarrow$ cube of $2=2^3=8$

Therefore, Cube of $2$ has the digit at unit's place = $8$

Hence, the Unit's digit in the cube of $5022$ would be equal to $8$.