00:01
Hey there, welcome to numerade.
00:04
We have a box here containing 14 large marbles and 10 small marbles.
00:11
So therefore, we have 14 large and 10 small.
00:19
Therefore, giving us a total number of marbles here of 24.
00:25
So 24 total.
00:27
All right? so normally we have 24 marbles here.
00:35
We have each marble with a certain number of color.
00:40
So if we randomly select from the box, what is the probability that it is small or white? so for the probability that is small or white, it will basically be equivalent to the probability of small plus the probability of white minus the probability of small and white.
01:13
Okay because we minus because we do not want to count them twice because we know some small marbles are white or you can treat it as vice versa so probability small how many small marbles are there we have a total of 10 small marbles plus the probability of white marbles so we have how many white marbles do we have we have a total of let's see here.
01:47
So we have four of the small marbles are white.
01:53
Okay, so we know we're going to use that to subtract.
01:56
Each marbles are green or white.
01:59
So we have nine of the large marbles are green...