Will checking its divisibility by its factors 2 and 3 work? Use the shortcuts for 2 and 3 on these numbers Class 8

Will checking its divisibility by its factors 2 and 3 work? Use the shortcuts for 2 and 3 on these numbers Class 8

Question 1.

Will checking its divisibility by its factors 2 and 3 work? Use the shortcuts for 2 and 3 on these numbers and divide each number by 6 to verify — 38, 225, 186, 64. Class 8

Solution:

Yes.

38 is divisible by 2 but not by 3.

So, it is not divisible by 6.

225 is divisible by 3 but not by 2.

So, it is not divisible by 6.

186 is divisible by both 2 and 3.

So it is divisible by 6.

64 is divisible by 2 but not by 3.

So, it is not divisible by 6.

Question 2.

What property do you think this digital root will have? Recall that we did this while finding the divisibility shortcut for 9. Class 8

Solution:

We should consider only the digits of the given number for finding the digital root.