Selecting at least 2 black balls from a set of 4 black balls in total selection of 3 balls can be 2 black and 1 white balls 3 black and 0 white balls Therefore, our solution expression looks 4C2 × 3C1 + 4C3 × 3C0 6 X 3 + 4 X 1 = 18 + 4 = 22 ways
In the following question below are given some statements followed by some conclusions based on those statements. Taking the given statements to be tru...
Statements: Some books are notebooks.
No notebooks is a pages.
Statements : All Stars are planet
All Satellite are galaxy
Some planets are satellite
Conclusions : I . At least some galaxy ar...
Statements: All TVs are monitors.
...
Statements : Some cities are villages.
No village is a town.
All towns are countries.
Conclusions:I. Some towns being cities is a ...
Statements:
Only a few Portions are Cakes.
Only a few Cakes are Lights.
All Lights are Candle.
Some Lights are no...
Statement:
Only Asha is Jeenat
Some Asha are Charu
Some Charu are not Yash
Conclusion:
I. Some Yash are As...
Statements:
Only a few Balloon are String.
All Balloon are Colour.
Only a few Strings are Scales.
All Scales are Toffee.
Statements:
All ambulance are fire engine.
Some train are fire engine.
Some bus are train.
Conclusions:
I. Some...
Statements:
Mostly temperature is thermometer.
Only a few thermometer is instrument.
Conclusions:
I. Some instrument is not ...
