$8:4\times2=1$ or $8:4\times2=4$?
19449
What is $48\div2(9+3)$?
119146
How to solve $n < 2^{n/8}$ for $n$?
125274
For $x+y=1$, show that $x^4+y^4\ge \frac{1}{8}$
127603
If $G$ be a group of order $8$ and $x$ be a element of order $4$. Prove that $x^2 \in Z(G)$
142038
Finding the number of elements of order two in the symmetric group $S_4$
24370
Dominos ($2 \times 1$ on $2 \times n$ and on $3 \times 2n$)
148668
How to show $A\times (B\cup C) = (A\times B)\cup (A\times C)$
31632
Should I use the singular or plural verb in mathematical formulae ("Two and two make/makes four")?
53327
$C_2 \times C_2$ and $C_4$
80916
How to prove that if $A\subseteq A\times A$, then $A=\varnothing$?
119964
Prove: $1/2(a+b) \times (a - b) = b \times a$ - in three space
131310
Evaluating $\dfrac{1}{\sin(2x)} + \dfrac{1}{\sin(4x)} + \dfrac{1}{\sin(8x)} + \dfrac{1}{\sin(16x)}$
81197
Why is $SO(3)\times SO(3)$ isomorphic to $SO(4)$?
62072
Is $2+2=4$ an identity?
109219
How do the sets $\emptyset\times B,\ A\ \times \emptyset, \ \emptyset \times \emptyset $ look like?
61103
Prove that $\mathbb{|Q| = |Q\times Q|}$
148647
If $\dfrac{4x^2-1}{4x^2-y^2}$ is an integer, then it is $1$