Top network posts

• 27 There exists a regular language A such that for all languages B, A ∩ B is regular.
• 18 The number of all 3-digit numbers abc for which abc + ab+bc + ac+a+b+c = 29
• 14 Group of $r$ people at least three people have the same birthday?
• 13 $\lim_{n \to \infty} (\frac{(n+1)(n+2)\dots(3n)}{n^{2n}})^{\frac{1}{n}}$ is equal to :
• 11 Finding coefficient of polynomial?
• 10 Squaring both sides when units are different?
• 8 The sum of the first $3$ terms is $24$ and the sum of the next $3$ terms is $ 51.$
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