Find the last two digits of $9^{{9}^{9}}$
64592
The last two digits of $9^{9^9}$
67312
How to find the last digit of $3^{1000}$?
153302
$9$ divides $n-r(n)$ where $r(n)$ is $n$ with its digits reversed
139173
To find last two digits of $2^{100}$
73020
Every integer is congruent to the sum of its digits mod 9
126708
Finding the missing digits of $23!$
132333
Fibonacci number that ends with 2014 zeros?
110460
find remainder of a number
137027
Find the value of $\sum_{n=0}^\infty\frac{1}{9n^2+9n+2}$
116379
What are the last two digits of $2017^{2017}$?
28661
What will be the one's digit of the remainder in: $\left|5555^{2222} + 2222^{5555}\right|\div 7=?$
142135
A number with 6 distinct digits which get multiplied by 5 if we move the last digit to front
19449
What is $48\div2(9+3)$?
119932
Generalizing $\,r(n^2) = r(n)^2,\,$ for $\,r(n) := $ reverse the digits of $n$
138696
Last two and three digits of $7^{754}$
34427
last $2$ digit and last $3$ digit in $\displaystyle 2011^{{2012}^{2013}}$
41008
how many permutations of {1,2,...,9}