Question
Statements: Some TVs are laptops. Some
laptops are computers. All computers are mobiles. All mobiles are radios. Conclusions: I. Some computers are TVs. II. Some mobiles are laptops. III. All computers are radios In each of the questions below are given four statements followed by three conclusions numbered I, II and III. 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 givenstatements disregarding commonly known facts.Solution
Some TVs are laptops(I) + Some laptops are computers (I) = No conclusion.  Hence I does not follow.            Some laptops are computers. (I)+ All computers are mobiles. (A)= Some laptops are mobile. (I) ⇒ Conversion ⇒  Some mobiles are laptops. (I) Hence II follows. All computers are mobile. (A)+ All mobile are radios. (A) = All computers are radios. Hence III follows.
A lad was asked his age by his friend. The lad said “The number you get when you subtract 25 times my age from twice the square of my age will be thri...
Three years ago, the ratio of ages of ‘Ravi’ and his sister was 3:4. Three years from now, the ratio of ages of Ravi and his mother will be 2:5. In ...
Shalini is younger than Rashi by 4 years. If the ratio of Shalini and Rashi ages is 3:4 respectively, then find the age of Shalini.
Determine the ratio of the present ages of Chintu to Danny if, 12 years ago, the ratio of Sunita's age to Binita's age was 9:5, and Sunita's age, 6 year...
Present age of ‘A’ is 40% more than that of ‘B’. If 10 years hence from now, ‘B’ will be 4 years younger than ‘A’, then find the sum of ...
A's age : B's age is 4 : 3. After 6 years, A will be 26 years. What is B's present age?
Five years after a couple's marriage, a daughter was born. The average age of the family 3 years after the daughter was born is 24 years. Further 3 year...
12 years ago, A was 1/2 of B’s age. If the ratio of their present ages is 4:5, what will be the sum of their present ages?
A certain sum of money becomes 4 times of itself in 15 years at simple interest. In how many years does it become double of itself at the same rate of s...
Riya is 5 years older than Meera, while Meera is 2 years younger than Nita. The ratio of age of Riya, 3 years hence and Meera, 1 year ago is 8:5. Find t...
Relevant for Exams:
