A box contains 12 green balls, 11 red balls, 7 white balls, and 10 black balls.

What is the probability of drawing a black ball from this box?

A.

B.

C.

D.

Question

A box contains 12 green balls, 11 red balls, 7 white balls, and 10 black balls.
 
What is the probability of drawing a black ball from this box?
 
 A.
 
 
 B.
 
 
 C.
 
 
 D.

abhisar · Answer

1/4

abhisar · Answer

$$Probability = \frac{ No~of Black balls }{ Total~Balls }$$

anonymous · Answer

so. $$probabilty= \frac{ 10 black}{ 12 green+11red+7white+10black }$$

anonymous · Answer

or $$probabilty= \frac{ 10 }{ 40 }$$

anonymous · Answer

then you would simplify that and the answer is a probability of 1 in 4. 1 black ball in every 4 pulled out.