Explain why? — task. Maths CBSE Live product, Class 8.

A number is divisible by \(9\) has digits summing to 90. If one digit is removed, and the new number is no longer divisible by \(9\). Explain why this happens?

Divisibility by \(9\) depends on the sum of the digits; removing a digit changes its sum.
Removing a digit changes the place value, and divisibility by \(9\) depends on place value.
The removed digit was always an odd number, so the number loses divisibility by \(9\).
Removing the digit changes the number of digits, which affects divisibility by \(9\).

Previous task

Exit to the topic

Next task

Send feedback

Did you find an error?

Send it to us!

3. Explain why?

Question: