Question

find of one's digit in the qube 109​

Answer 1

Answer:

9

Step-by-step explanation:

instead of calculating the cube of 109, multiply the ones digit of 109, i.e. 9. 9x9 which is equal to 81, now multiply ones digit of 81 i.e. 1 by 9. Hence you get the answer, 9.

Answer 2

Answer:

9

Step-by-step explanation:

consider only unit place, here it is 9

now the cube of 9 is 729

now consider only unit place,it is 9

here we go with 9 is the unit place of 109 cube