What is $48\div2(9+3)$?
528
Do values attached to integers have implicit parentheses?
64592
The last two digits of $9^{9^9}$
4530
For which natural numbers are $\phi(n)=2$?
97150
Solve $[2^{(2^{403})}] = [a]$ in $\mathbb Z_{23}$ where $0 \le a < 23$.
41008
how many permutations of {1,2,...,9}
145354
What is $\gcd(0,0)$?
125210
proof: primitive pythagorean triple, a or b has to be divisible by 3
99328
Value of $\sin (2^\circ)\cdot \sin (4^\circ)\cdot \sin (6^\circ)\cdots \sin (90^\circ) $
6777
Showing $(a^{2}+2)(b^{2}+2)(c^{2}+2)\geq 9(ab+bc+ca)$
46814
$ a+b+c+d=6 , a^2+b^2+c^2+d^2=12$ $\implies$ $ 36 \leq 4(a^3+b^3+c^3+d^3)-(a^4+b^4+c^4+d^4) \leq48 $
29640
If $x \equiv 1 \pmod 3$ and $x \equiv 0 \pmod 2$, what is $x \pmod 6$?
35666
How to prove the divisibility rule for $3\, $ [casting out threes]
45090
Given any positive real numbers $a,b,c$, we have $(a^{2}+2)(b^{2}+2)(c^{2}+2)\geq 9(ab+bc+ca)$
103545
Prove "casting out nines" of an integer is equivalent to that integer modulo 9
117380
Divisibility Rule for 9
38156
Find the order of $8/9, 14/5,48/28$ in the additive group of $\mathbb{Q}/\mathbb{Z}$
142151
Find the last two digits of $9^{{9}^{9}}$