Why are there separate terms for the numbers 11 to 19?
51453
Why do eleven and twelve get unique words and not end in "-teen"?
104359
How do you pronounce numbers written in different bases?
106940
Why are complex numbers considered to be numbers?
102352
Number theorems with chapter number
10769
How do you format the day of the month to say "11th", "21st" or "23rd" (ordinal indicator)?
40763
Possible orders of permutations of $11$ symbols
132068
Write the set $\{1, 6, 11, 16,\ldots\}$ in compact (concise) notation.
122084
Pluralizing Numbered Items
34427
last $2$ digit and last $3$ digit in $\displaystyle 2011^{{2012}^{2013}}$
43283
More numbers between $[0,1]$ or $[1,\infty)$?
85342
10 x and y? What does this mean?
95092
What are the numbers before and after the decimal point referred to in mathematics?
47562
Confusion in symbol of subset.
106272
Do numbers exist independently from observers?
145712
The amount of VS The number of, etc
115733
Proving that $\sec\frac{\pi}{11}\sec\frac{2\pi}{11}\sec\frac{3\pi}{11}\sec\frac{4\pi}{11}\sec\frac{5\pi}{11}=32$
140858
Number of ways to choose 6 objects when they are of 11 different kinds