Question
There are 14 boys and 6 girls giving interview for a
job. If three of them are selected, then what is the probability that one of the three is a girl and the other two are the boys?Solution
Total Number of candidates = 20 Let ‘S’ be the Sample Space Then, n(S) = number of ways of three candidates who got selected n(S) = 20C3 = 1140 Let ‘E’ be the event of 1 girl and 2 boys selected Therefore, n(E) = number of possibility of 1 girl out of 6 and 2 boys out of 14 n(E) = 6C1 × 14C2 = 546 Now the required Probability = (n(E))/(n(S)) = 546/1140 = 91/190
In the questions given below there are three statements followed by three conclusions I, II and III. You have to take the three given statements to be ...
In the questions given below, there are three statements followed by three conclusions I, II and III. You have to take the three given statements to be...
Statement
Only a few Pumpkins are Apples
All Apples are Oranges
No Orange is a Pear
Conclusion
I. Some Pears are not ...
Some paints are not wires. Some cables are not bulbs. Some paints are not bulbs
Statement: Â Â Â Â Â
Only a few Boat are Noise. Â Â Â Â
Only a few Noise are Bose. Â Â Â Â
Conclusion: Â Â Â
I. Som...
Statements:Some combs are boxes.
All boxes are mirrors.
Conclusions:I. Some boxes are combs.Â
II. Some mirrors are combs.
In the question below there are three statements followed by three conclusions I, II and III. You have to take the three given statements to be true ev...
- Statements:
All umbrellas are snows.
Only snow is rain.
No cloud is an umbrella.
Conclusions:
I. No snow is a cloud... Statement : No fruit is a vegetable.
Some vegetable are petals.
All petals are trees.
Some trees are leaves.
Conclusion :...
Statements:
Only a few Kennel are Stable.
No Stable is Den.
All Den are Shed.
Conclusions:
I. All Kennel are Shed.
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