There is 50 elements transmitted from transmitter to receiver in 1st time where

There is 50 elements transmitted from transmitter to receiver in 1st time where the probability of each element is not received by receiver is 0.1 and it will be received by receiver with probability 0.9. Again transmitter transmit same 50 elements 2nd time but this time i do not know what is the probability of each element is not received by receiver?Like this transmitter in total 9 times transmit this 50 elements. I know that the second time the probability of each element is not received by receiver is 0.0494 and 3rd time it is 0.02284 but i do not how it is come. Anyone help is very much appreciated.Thanks in advance