Answer:
0.81
Step-by-step explanation:
The probability that multiple independent events will occur is the product of the probabilities of each of them.
p((<2pm on day 1) & (<2pm on day 2)) = p(<2pm on day 1)×p(<2pm on day 2)
= (0.9)(0.9)
p(before 2 pm on both days) = 0.81
