Question

if you flip a coin the chances it will come up heads are 50% .what are the chances that you flip a coin three times and have it come up heads all three times?
11.1%
12.5%
14.3%
16.7%
20.0%

Answer 1

probablity(of an event happening)

=no. of desired outcomes/total no. of outcomes

t represents tails

h represents heads

(t,t,t) , (t,t,h) , (t,h,h) , (t,h,t)

(h,h,h), (h,h,t) ,(h,t,t) , (h,t.h)

total no. of outcomes= 8

desired outcome =1

=1/8=12.5%