3. in a bag there are 3 red, 2
white and 5 blue marbles. what
is the probability of drawing a
red, white and then blue in
order, if each marble is replaced
after being drawn?

Red: 30%

Blue: 50%

White: 20%

Step-by-step explanation:

All you have to do is add the amount all together (3+2+5). The number you get is the number in your denominator, if you want to find the percent then all you have to do is put the number of the certain marbles you are looking for in the numerator.

For example, if you want to find the probability of drawing a red marble, it would be a 30% chance because there are only 3 in the bag of 10 marbles. Or, 3/10. This fraction can be kept or can be changed into a percent.

So basically red is 3/10, blue is 5/10, and 20 is 2/10.

his chances of getting a coin of higher value is 4/19

step-by-step explanation:

so, converting firstly the mixed fractions to improper fractions and then "adding".