Question

A jar contains 17 blue cubes,4 blue spheres,5 green cubes,and 16 green spheres.what is the probability of randomly selecting a blue object or a cube? Give your answer as a fraction.

Answer 1

13/21. that is 0.619

Explanation:

there are 17 + 4 + 5 + 16 = 42 things in total.

p = probabililty.

p(blue object) = (17 + 4)/ 42

= 1/2.

p(cube) = (17 + 5) /42

= 11/21.

we have to subtract the things that are both blue and a cube:

there are 17 of those. that is p(blue and cube) = 17/42.

so our answer is (1/2) + (11/21) - (17/42)

= 13/21. that is 0.619

Answer 2

The answer would be 3/16

Step-by-step explanation: Hope this helped