Question
A man can row at 36 km/hr in still water. In a stream
which is flowing at 12 km/hr, it takes him 3 hrs to a place and back. How far is the place?Solution
Let distance= x km, Rate upstream = 36 - 12 = 24 km/hr Rate downstream = 36 + 12 = 48 km/hr. ∴ Time taken upstream= x/24 and Time taken downstream= x/48 ∴ x/24 + x/48 = 3 ⇒ 3x/( 48) = 3 ⇒ x = 48 km.
Statements: All colours are boxes.
     No box is a book.
Conclusions: I. Some boxes are not books.
    II. Some c...
Statements:
No Pencil is a Sharpener.
Only a few Sharpeners are Erasers.
98% of Erasers are Pens.
100% Pens are Boxes.
<...Conclusions:
I. Some Signs are Symbols.
II. Some Signs are not Marks.
III. No Number is a Mark.
Statements:
Statement:
Some divide are plus.
Only a few plus are minus.
All multiply are minus.
 None plus is square.    ...
In the question below there are three statements followed by two conclusions I and II. You have to take the three given statements to be true even if t...
Statements: No strategy is a motivation.
All motivations are training.
Conclusions: I. Some strategies are trainings.
II. Some trai...
Statement:
Only a few beautiful are smart.
All smart are handsome.
No handsome is ugly.
Conclusion:
I. Some beautiful...
Statements: No painting is a frame.
All frames are lights.
Some lights are canvas.
Conclusions: I. No light is a painting.
Statements:
All M are K.
All K are J.
All L are J.
No L is a P.
Conclusions: Â Â Â Â Â Â Â Â
I. No K is L...
Statements: Â Â Â Â Â Some books are notebooks.
                             No notebooks is a pages.
Relevant for Exams:
