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.

Answer 1

1/4

Answer 2

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

Answer 3

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

Answer 4

or \[probabilty= \frac{ 10 }{ 40 }\]

Answer 5

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