Solving more complicated big O's
2378
Big O, how do you calculate/approximate it?
39969
Algorithms for computing multiplicative order modulo $n$
80575
Arrange the following growth rates in increasing order: $O (n (\log n)^2), O (35^n), O(35n^2 + 11), O(1), O(n \log n)$
26898
Trouble solving two number theoretical problems
46036
Logic for decomposing a permutation into different products composed of transpositions
978
Solving $ax \equiv c \pmod b$ efficiently when $a,b$ are not coprime
126297
A high school Olympiad problem
45386
Fibonacci sequence emerging from integer partitioning
51671
lower bounding logarithm of sums
100759
Extending exponentiation to reals
122504
Factorisations of permutations
129693
An interesting problem with "decomposing" natural numbers.
124904
Finding pairs with product greater than sum
45498
Building a hard to factor number without knowing its factorization
59419
Crafty solutions to the following limit
45204
Combinatorial proofs: having a difficult time understanding how to write them out
143264
Is there a nice way of expanding multinomials of the form $(1+x+\cdots+x^l)^n$?