How to generate random binary numbers 0 or 1 with length of N and with option to control the probability of having 0 or 1?

I want to generate random binary numbers (0 or 1) having N length size. The tricky part is that, It should be able to control the probability of having either more 1 or 0. For example, I want total 100 random numbers with 0 having probability of 40% and 1 having probability of 60%. Please help.