Yes because you times it by 4 each time
check the picture below.
all angles at point E are right-angles, therefore x + 20 = 90, meaning x = 90 - 20.
Answer: 9/55
P(1st = red and 2nd = blue)
= (3/11) x (6/10)
= 18/110
= 9/55
To find the probability of something happening,
= (number of desired outcomes) / (total number of outcomes)
If you are finding the probability of more than one thing happening at the same time, you multiply the probability of both things happening together
0.04 is 1/10 of 0.4
0.4 x 0.10 = 0.04
hope this helps