Question

True or False?
When tossing 2 coins, P(at least 1 tail) = 1 - P(not all tails).

Answer 1

Okay true. But why?

Answer 2

hold on!!

Answer 3

Yup...... becoz prob of getting head + tail =1

Answer 4

Oh! Okay. Thanks

Answer 5

and in the future, supposed you wanted to know the probability that if you flip a coin ten times you get at least one head
you do that by computing \(1-P(\text{all tails})\)