Question

when a drawing pin falls to the ground, the probability that it lands point up is 0.2. a. Find the probability that a pin does not lend point up. Two drawing pins fall one after the other.

Answer 1

this is a hard one

Answer 2

For one pin, the probability that it lands NOT point up is
P(1)=1-0.2=0.8
For two pins, dropped in succession, the probability that both do not point up is
P(1)=0.8*0.8
=0.64