Ajar contains 30 red, 30 blue, and 60
white buttons. you pick one button
at random, find the probability that it
is red.

The probability of picking red button is

Solution:

Given, A jar contains 30 red, 30 blue, and 60 white buttons.  

You pick one button at a random choice,  

We have to find the probability that it is red button.

Now, total number of buttons = 30 + 30 + 60 = 120 buttons.

Number of favourable cases for red button = 30 red buttons.

The probability of an event is given as:

Thus the probability that it is red is

4444444444444 i think