Inverse mills ratio
67268
Conditional distribution of a normal distribution given it is smaller/bigger than another normal distribution
42861
Inverse of sum of exponential random variables (mean and variance)
143132
How to reverse the $n$ choose $k$ formula?
33569
Use polar complex numbers to find multiplicative inverse
77554
Inverse of the sum of matrices
51985
Ratios in Regression, aka Questions on Kronmal
126025
Computing the inverse of a permutation
118778
What's the inverse operation of exponents?
153558
A/B testing ratio of sums
20611
Inverse of a factorial
65732
Inverse Fourier transform
108589
The inverse of the matrix $\{1/(i+j-1)\}$
1970
Inverse Euler totient function
75351
How to find inverse Modulo?
145481
Extended Euclidean Algorithm for Modular Inverse
145768
The inverse of a matrix in which the sum of each row is $1$
65516
How to model this odd-shaped distribution (almost a reverse-J)