Question

1.12 find the ones digit in the cubes of each of the following numbers

Answer 1

Answer:

Given the numbers and after finding the cube of the number we have to find the one’s digit of that cubed number.

i. First considering the number 3332

Here the last digit of 3332 is 2.

The cube of 2 is 8.

⇒23=8⇒23=8

Here the last digit of 2323 is 8.

Hence the one’s digit of the cube of 3332 is 8.

ii. Now consider the second number 8888

Here the last digit of 8888 is 8.

The cube of 8 is 512.

⇒83=512⇒83=512

Here the last digit of 8383 is 2.

Hence the one’s digit of the cube of 8888 is 2.

iii. Now consider the next number 1492

Here the last digit of 1492 is 2.