Question

What is the unit digit of cube of 729, answer mathematically !

Satisfied answer will be the brainliest !​

Answer 1

Answer:

cube of 729 is..387420489.

and unit digit is 3

Answer 2

Answer:

9

Step-by-step explanation:

So for questions like this, you just have to cube the digit in the units place and the answer will be the unit digit of that number.

So for this number,

the digit at units place is 9

9 cube = 9*9*9 = 729

Therefore the answer is the unit digit of 729 which is 9

( tip - you don't have to actually calculate 9 cube

you can just find 9*9 which is 81 and then multiply its unit digit which is 1 with 9. You will get 9 )