An urn is filled with marbles of various colors (but each marble only has one color). if the probability of pulling a red marble at random is 1/4 and the probability of pulling a blue marble at random is 1/3, what is the probability that a marble randomly pulled from the urn will be one of those two colors (red or blue)?

Step-by-step explanation:

We are given that

The probability of pulling a red marble=

The probability of pulling a blue marble=

We have to find the probability that a marble at randomly pulled from the urn will be one of those two colors ( red or blue)

When a marble is of red color then it can not be of blue color .

When a marble is of blue color then it can not be of red color.

We know that

A=Red marble

B=Blue marble

Substitute the values then, we get

Hence, the probability of pulling red or blue marble from the urn=

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.