Question

If we toss four fair coins, what is the probability that we get exactly four tails?

Answer 1

A
1/32

B
1/8

C
1/16

D
1/20

Answer 2

what is the probability of getting 1 tail in toss os 1 coin, you know ?

Answer 3

1/2

Answer 4

right? 50%?

Answer 5

yes, so to get 4 tails in 4 toss,
all 4 must be tails

Answer 6

so, 1/2 in 1st toss AND 1/2 in 2nd, and so on...
overall probability = (1/2)(1/2)(1/2)(1/2) = ...

Answer 7

it will be 1/16

Answer 8

oh ok. 1/16 then, thanks

Answer 9

yes, welcome ^_^