Question

The record of a weather station shows that out of
the past 300 consecutive days, its weather fore-
casts were correct 200 times. The probability, that
it was not correct on a given day, is
(1) 0.4
(2) 0.2
(3) 0.1
(4) 0.3​

Answer 1

I have given you an example of a same related sum. You can solve your question maintaining the same way that has been shown in the picture.