question_answer

The probability that a red marble selected at random from a jar containing \[x\]red, y blue and z green marbles is ____.    

A) \[\frac{y}{x+y+z}\]                  

B) \[\frac{x+z}{x+y+z}\]  

C)        \[\frac{x}{x+y+z}\]      

D)        \[\frac{y+z}{x+y+z}\]    

Correct Answer: C

Solution :

Total number of marbles Number of red marbles Required probability