Question

Write the units digit of the cube for $109$.

• A. $1$
• B. $7$
• C. $9$
• D. $3$

Answer 1

The correct option is C $9$

Given, the number is $109$.

Here, the units digit is $9$.

We know, the cube of $9$, i.e. $9^3=729$, whose units place is $9$.

Therefore, the units digit of the cube of $109$ is $9$.

Hence, option $C$ is correct.