Question

Twelve coins are tossed. What is the probability of getting at least two tails?

Answer 1

1/6

Answer 2

I don't think that's right.

Answer 3

((2^12)-12)/(2^12)

Answer 4

also how do you do this one:
Fifteen coins are tossed. What is the probability of getting at least one head?

Answer 5

in place of 12 put 15 in above solution