SOLUTION: A counter is drawn from a box containing 10 {{{highlight(cross(rod))}}} <U>red</U>, 15 black, 5 green and 10 yellow counters. Find the probability that the counter is A. Black

Question 1193723: A counter is drawn from a box containing 10 red, 15 black, 5 green and 10 yellow counters.
Find the probability that the counter is
A. Black
B. Not green or yellow
C. Not yellow
D. Red or black or green
E. Not blue
Answer by ikleyn(52794) (Show Source): You can put this solution on YOUR website!
.


In all cases, the probability is a fraction, whose denominator is the full number of counters.


In each case, the numerator of this fraction is the number of counters under given description.


This hint is enough for you to complete the rest on your own.


For example, in case (a), the answer is   =  = .


In case (b), the answer is   =  = .

And so on . . .

RELATED QUESTIONS
a counter is drawn from a box containing 10 red, 15 black, 5 green, and 10 yellow... (answered by stanbon)

a box contains 6 white counters and 5 yellow counters. a counter is picked at random from (answered by stanbon)

In a bag are five counters each of a different colour: green, yellow, red, blue, and... (answered by math_tutor2020)

In a bag are five counters each of a different colour: green, yellow, red, blue, and... (answered by Theo)

A bag contains 10 counters, of which 7 are green and 3 are while. A counter is picked at (answered by stanbon)

A box contains 100 balls of different colours .28 red , 17 blue , 21 green , 10 white, 12 (answered by richwmiller)

A ball is drawn at random from a box containing 10 red balls, 30 white balls, 20 blue... (answered by Edwin McCravy)

A bag contains two black balls three green balls and four red balls. a ball is pick from... (answered by solver91311)

A marble is drawn at random from a box containing 3 yellow, 4 white and 8 blue marbles. (answered by kharisree)