Question

A jar contains 20 green, 23 orange, 20 red, and 15 brown marbles. A marble is drawn at random. What is the probability that the marble is orange, green, or red?​

Answer 1

Answer: probability for the orange marble is 23/78 ; green= 20/78; red=20/78

Step-by-step explanation:there are 23 orangebmarbles out of all marbles which is 78 marbles and it doesn't help same for red and green marbles they both are 20 out of 78 marbles which is the total . So that is the probability of all the total marbles

Answer 2

total marbles: 20 + 23 + 20 + 15 = 78 marbles

probability of orange: 23/78

probability of green: 20/78

probability of red: 20/78

add up fractions

$\frac{20}{78} + \frac{20}{78} + \frac{23}{78}$

probability of orange, green or red:

63/78

can also simplify to

21/26