Question

3 sets of traffic lights on route. There is a fifty fifty chance of lights being Te or green. What are chances of getting 3 consecutive green lights

Answer 1

Answer:1/6

Explanation:

Let probability of green be G and The be T

There are 6 possible outcome

GGG

GGT

GTT

TTT

TGT

BGG

Probability of it being green

=50/100= 1/2

Probability of 3 consecutive G

= GGG= 1/2 *1/2 *1/2

=1/6