Number 16- 216
number 17- 180
number 18- 252
So,
The probability of drawing a yellow marble is

.
Since he replaces the marble after it is drawn out, the probability of drawing another yellow is the same:

.
The probability of drawing a red marble is

.
In order to get the probability of drawing 2 yellow marbles and 1 red marble, given that each marble is replaced after it is drawn out, we must multiply the fractions together.

Because the order of the marbles doesn't matter, we will multiply the probability by 3.
Answer:
The greatest common factor of the given expressions is

Step-by-step explanation:
Given that 
can be written as

can be written as

and
can be written as

Comparing the common factors we have
is the greatest common factor of 
Therefore the greatest common factor of the given expressions is

Answer: because they were right for each other.
Step-by-step explanation:
(0.4+0.75)/0.5
Your answer is 2.3
UPDATE
the answer is either 2 (3/10) as a mixed number or 23/10 as an improper fraction