Question
Statements : No paper is a book. All
books are copies. Some copies are pages. No page is a letter. Conclusion :Β Some letters are copies. Some books are pages. No copy may be paper. Some letters are not copies. In each of the questions below are given four statements followed by four conclusions numbered I, II and III and IV. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of given conclusions logically follows from the given statements disregarding commonly known facts.Solution
Some copies are pages (I) + No page is a letter (E) β some copies are not letters (O). Hence, conclusion Iand IV will not follow but it will make a complementary pair. All books are copies (A) + Some copies are pages (I) β No conclusion. Hence, conclusion II will not follow. No paper is a book (E). β All books are copies (A) β Some copies are not papers (O) β Probable conclusion β No copy may be paper (E). Hence, Conclusion III follow.
Ratio of still water speeds of three boats is 3:4:5. The first boat travels downstream, the second and third boats travel upstream. They travel in strea...
The ratio of the speed of boat βAβ in still water, the speed of boat βBβ in still water and the speed of the current is 7:4:2, respectively. If ...
- A launch goes 120 km with the current in 6 hours. For the same trip against the current, it needs 4 hours more. Whatβs the speed of the boat in still wat...
The ratio of the speed of boat βAβ in still water, the speed of boat βBβ in still water and the speed of the current is 6:4:2, respectively. If ...
The time taken by the boat to cover (d+130) km distance in downstream is 1.9 hours less than the time taken by the same boat to cover (d-45) km distance...
A boat takes half the time to move a certain distance downstream than upstream. the ratio of the boat's speed in still water and that of the current is.
A boat takes 20 hours to travel 260 km downstream. The speed of the boat in still water is 125% greater than the speed of the stream. If the boat comple...
The downstream speed of a boat is 25% more than its upstream speed. The boat takes 3.2 hours to travel 57.6 km upstream.
W...
In still water, the speed ratio of boats A and B is 10:7. Boat Aβs still-water speed is twice the stream speed. If A covers 180 km downstream in 6 hou...
A rower covers x km downstream and the same distance upstream in 13 hours. He can row 2x km downstream in 4 hours. What is the time taken to row x km up...