10*3 = 30 feet
30 ft*12 =360 inches
2ft *12 in=24 inches
360 +24 +1=385 inches
Assuming that each marble can be picked with equal probability, we notice that there is a total of

marbles, of which 2 are red.
So, the probability of picking a red marble is

In fact, as in any other case of (finite) equidistribution, we used the formula

Answer:
rko
Step-by-step explanation:
Answer: -4293764
Step-by-step explanation: