What is a monte carlo simulation? Monte carlo simulation is a numerical method based on the extensive use of random numbers for solving different problems Remark Monte Carlo simulation can be used to study not only stochastic problems(e.g, diffusion) but also non stochastic ones(Monte Carlo integration)What is a Monte Carlo simulation? Monte Carlo simulation is a numerical method based on the extensive use of random numbers for solving different problems. Remark: Monte Carlo simulation can be used to study not only stochastic problems (e.g., diffusion) but also non stochastic ones (Monte Carlo integration)