Question

Gumballs related questions:

a) In a jar there are 20 gum balls of exactly equal size, there are 5 gum balls of each of the following colors (yellow, green, purple, red). John wants a red gum ball and picked one! Mark now wants a red gum ball too. What are Marks’s odds of getting one?

A. ¾

B. 4/19

C. 3/18

D. 1/5

b)In a jar of gum balls with gum balls of exactly equal size, there are 5 of each color (yellow, green, purple, red). Rose wanted a red gum ball but did not get a red one! Carleigh now wants to try for a red gum ball too. What are her odds of choosing one?

A. 5/19

B. 4/19

C. 3/18

D. 1/5

6. In a jar of gum balls with gum balls of exactly equal size, there are 5 of each color (yellow, green, purple, red). Phillips wanted a yellow gum ball but didn’t like the color he got so he put it back in the bag! Carlos now wants to try for a yellow gum ball too. What are his odds of choosing a yellow gum ball?

A. 5/19

B. 4/19

C. 1/4

D. 1/5

Answer 1

a) In a jar there are 20 gum balls of exactly equal size, there are 5 gum balls of each of the following colors (yellow, green, purple, red). John wants a red gum ball and picked one! Mark now wants a red gum ball too. What are Marks’s odds of getting one?

Number of red gums initially = 5

Total number of gums = 20

John picked one red gum

Now,

Update number of red gums = 4

Updated number of total gums = 19

Odds Mark gets a red gum = 4/19

b)In a jar of gum balls with gum balls of exactly equal size, there are 5 of each color (yellow, green, purple, red). Rose wanted a red gum ball but did not get a red one! Carleigh now wants to try for a red gum ball too. What are her odds of choosing one?

Number of red gums initially = 5

Total number of gums = 20

Rose did not pick red gum

Now,

Update number of red gums = 5

Updated number of total gums = 19

Odds Carleigh gets a red gum = 5/19

6. In a jar of gum balls with gum balls of exactly equal size, there are 5 of each color (yellow, green, purple, red). Phillips wanted a yellow gum ball but didn’t like the color he got so he put it back in the bag! Carlos now wants to try for a yellow gum ball too. What are his odds of choosing a yellow gum ball?

Number of yellow gums initially = 5

Total number of gums = 20

Phillips did not pick yellow gum and put it back

Now,

Update number of yellow gums = 5

Updated number of total gums = 20

Odds Carlos gets a yellow gum = 5/20 1/4