9/26
## [1] 0.3461538
M <- 0.9 * 0.95 * 0.15 + 0.9 * 0.05 + 0.1 0.1/M # prva
## [1] 0.3659652
0.9 * 0.05/M # druha
## [1] 0.1646844
0.9 * 0.95 * 0.15/M # tretia
## [1] 0.4693504