Question
A bag contains 12 white and some black balls. If the
probability of drawing a black ball from the bag is thrice that of drawing a white ball, find the number of black balls in the bag.Solution
Given, Number of white balls = 12 Let x be the number of black balls. Total number of balls in the bag = 12 + x Also, the probability of drawing a black ball from the bag is thrice that of drawing a white ball. ⇒ x/(12 + x) = 3[12/(12 + x)] ⇒ x = 36 Hence, the number of black balls in the bag = 36
Statement:
Only a few P are Q
Only a few Q are R ...
Conclusions:
I. No Reel is a Real.
II. Some Account are not Reel.
III. Some Reel are Hack.
Statements:
Statements:
Some schools are hospitals
Mostly hospitals are courts
Some courts are parlours
Conclusions:
I...
Statement :
Some candles are matches.
Some matches are rockets.
Conclusion:
I. Atleast some rockets are candles.
II. No rocket is a candle.
In the question below are given some statements followed by some conclusions. You have to take the given statements to be true even if they seem to be ...
Statements:
A few Red is Green.
60% Black is Green.
Only Green is Pink.
Conclusion:
I. No Pink is Black.
II. Some Black is Red.
Statement:
All petrol are diesel.
Only a few petrol are coal.
Some diesel are kerosene.
Conclusion:
All coal be...
Statement:
All Pens are pencil.
Only Pencils are Laptop.
Only Pens are Mobile.
Only Pencils are Book.
Conclusion :...
Statements:
No red is white.
All white are orange.
Some Orange are blue.
Conclusions:
I. No red is blue.
II. N...
Statements:
Only a few Objectives are Solutions.
Only Subjective are Information.
A few Subjective are Solutions.
Conclusion...
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