8quad 11^(9)+9^(11)" is divisible by "

9^(11)+11^(9) is divisible by

9^11 + 11^9 is divisible by

9^11 + 11^9 is divisible by

(-9)/(-11) is a

11^9+9^11 is divided by

Can we conclude 10^(2n)-1 is divisible by both 9 and 11? Explain. Is 10^(2n+1)-1 is divisible by 11 or not? Explain.

When the remainder when (9)^(11) is divided by 11.

Find the polyndrome number of 9 digits and check whether it is divisible by 11?

The smallest value of y in the number 9y8071, so that it is divisible by 11 is