Question

Find the unit digit of the cube root of the following number: $13824$

• A. $8$
• B. $6$
• C. $4$
• D. $2$

Answer 1

Answer: (C)

$4$

The unit's digit of $13824$ is $4.$
The only numbers whose cubes end with $4$ are the numbers which have $4$ in their unit's place. Hence cube root of $13824$ has $4$ in unit's place.