Write the units digit of the cube of each of the following numbers:
$31,109,388,833,4276,5922,77774,44447, 125125125.$

AcademicMathematicsNCERTClass 8

Given:

$31,109,388,833,4276,5922,77774,44447, 125125125.$

To do:

We have to write the units digit of the cube of each of the given numbers.

Solution:

We know that, 

If the units digit of a number $n$ is,

1, then the units digit of its cube is 1.

2, then the units digit of its cube is 8.

3, then the units digit of its cube is 7.

4, then the units digit of its cube is 4.

5, then the units digit of its cube is 5.

6, then the units digit of its cube is 6.

7, then the units digit of its cube is 3.

8, then the units digit of its cube is 2.

9, then the units digit of its cube is 9.

0, then the units digit of its cube is 0.

Therefore,

The units digit of the cube of 31 is 1.

The units digit of the cube of 109 is 9.

The units digit of the cube of 388 is 2.

The units digit of the cube of 833 is 7.

The units digit of the cube of 4276 is 6.

The units digit of the cube of 5922 is 8.

The units digit of the cube of 77774 is 4.

The units digit of the cube of 44447 is 3.

The units digit of the cube of 125125125 is 5. 

raja
Updated on 10-Oct-2022 12:46:26

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