If last two digits of $ 7^{7^{7}}=k$, find $k-38$?
12760
The last 2 digits of $7^{7^{7^7}}$
129492
Choosing $15$ out of $100$ whole numbers with difference of any $2$ divisible by $7$
107008
Find the remainder when $45!$ is divided by $47$?
28661
What will be the one's digit of the remainder in: $\left|5555^{2222} + 2222^{5555}\right|\div 7=?$
49967
Find the last two digits of $ 7^{81} ?$
51299
How many digits is $99^{99}$ without a calculator?
64985
Get the numbers from (0-30) by using the number $2$ four times
138890
Cool property of the number $24$
116379
What are the last two digits of $2017^{2017}$?
152008
Least prime of the form $38^n+31$
54441
Last two digits of $3^{400}$
42462
Use a linear approximation to estimate the number $64.07^{2/3}$
149961
Two digit numbers
49626
Find the last two digits of $33^{100}$
125040
Show by induction : $n^7-n$ is a multiple of 7
89804
Diophantine equation: $7^x=3^y-2$
50110
How to check if a number is a power of 2