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Two bags A and B have equal number of bails. Bag A has 20% red balls and 80% green bails. Bag B has 30% red bails. 60% green balls and 10% yellow balls. Contents of Bags A and B are mixed thoroughly and a ball is randomly picked from the mixture. What is the chance that the ball picked is red?
A
20%
B
25%
C
30%
D
40%
Correct Answer:
25%
Below is the list of colors nominated as the favorite colors by students of class I. Determine the color which has frequency 9. red, blue, red, yellow, green, yellow, green, yellow, yellow, red, green, red, blue, red, yellow, red, blue, yellow, red, blue, blue, yellow, yellow, green, green
A
red
B
blue
C
green
D
yellow
In a bag which contains 40 balls, there are 18 red balls and some green and blue balls. If two balls are picked up from the bag without replacement, then the probability of the first ball being red and second being green is 3/26. Find the number of blue balls in the bag.
A
16
B
12
C
10
D
14
In a bag the ratio of red balls to green balls is 4 : 9. If 6 more green balls were added to the bag, the ratio of red balls to green balls would become 1 : 3. How many red balls are there in the bag?
A
9
B
10
C
8
D
12
In a bag, the ratio of red balls to green balls is 4:9. If 7 more red balls are added to the bag, the ratio of red balls to green balls will become 5:6. How many green balls are there in the bag?
A
12
B
27
C
18
D
9
A bag contains 6 red balls 11 yellow balls and 5 pink balls. If two balls are drawn at random from the bag. One after another what is the probability that the first ball is red and second ball is yellow?
A
$$\frac{1}{14}$$
B
$$\frac{2}{7}$$
C
$$\frac{1}{7}$$
D
$$\frac{3}{14}$$
E
None of these
There are 87 balls in a jar. Each ball is painted with at least one of two colors, red or green. It is observed that 2/7 of the balls that have red color also have green color, while 3/7 of the balls that have green color also have red color. what fraction of the balls in the jar has both red and green colors?
A
6/14
B
2/7
C
6/35
D
6/29
A bag contains 5 red and 3 green balls. Another bag contains 4 red and 6 green balls. If one ball is drawn from each bag.
Find the probability that one ball is red and one is green.
A
$$\frac{{19}}{{20}}$$
B
$$\frac{{17}}{{20}}$$
C
$$\frac{{8}}{{10}}$$
D
$$\frac{{21}}{{40}}$$
A bag contains 4 red and 3 black balls. A second bag contains 2 red and 4 black balls. One bag is selected at random. From the selected bag, one ball is drawn. Find the probability that the ball drawn is red.
A
23\/42
B
19\/42
C
7\/32
D
16\/39
A box has 8 red balls and 8 green balls. Two balls are drawn randomly in succession from the box without replacement. The probability that the first ball drawn is red and the second ball drawn is green is
A
$$\frac{4}{{15}}$$
B
$$\frac{7}{{16}}$$
C
$$\frac{1}{2}$$
D
$$\frac{8}{{15}}$$
Bag 1 contains 3 red and 5 black balls while another Bag 2 contains 4 red and 6 black balls. One ball is drawn at random from one of the bags and it is found to be red. Find the probability that it is drawn from bag 2.
A
31/62
B
16/62
C
16/31
D
31/32