Question
Statements: All rollers are coasters.
Some swings are rollers. All bridges are swings. Conclusions: I. All coasters being swings is a possibility. II. Some swings are not bridges. III. At least some rollers are definitely swings. In each of the questions below are given three 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 given statements disregarding commonly known facts.Solution
Some swings are rollers(I) + All rollers are coasters(A) ⇒ Some swings are coasters(I) ⇒Probable conclusion ⇒ All coasters may be swings(A). Hence, conclusion I follows. All bridges are swings(A) ⇒ Conversion ⇒ Some swings are bridges(I). Hence, conclusion II does not follow. Some swings are rollers(I) ⇒ Conversion ⇒ Some rollers are swings(I). Hence, conclusion III follows.
Suresh received 100, 92, 85, 97, 90 and 88 marks in his semester exams. What is his average score?
In an examination, the average marks obtained by the students is 75. After correcting the quantitative mistakes, the average of 100 students is reduced ...
The average marks of 12 students in an exam is (x + 10). If the average of the first six students is 50 and that of the remaining six is 70, find the va...
Average of 6 numbers is 12. If one number 5 is replaced by 17, find the new average.
The average of five even numbers is 38. If we replace two of these even numbers, 88 and 92, with a single even number X, the new average decreases by 4....
The number of students in class 'A' is 104, and the ratio of girls to boys is 4:9. If the average number of boys in classes 'A' and 'B' is 124, and the ...
In a class of 30 students, the average age each student of the class is 21 years. 4 more students join the class such that the average age of the class ...
Average run scored by a batsman in 60 innings is 180. In next 6 innings, he scored runs with an average of ‘x’ so that his overall average increases...
An ODI is played between India and Pakistan. Team India’s average run rate for the first 33 overs was 6.5 runs per over while in the remaining 17 over...
In a school, 30 boys scored an average of 76 marks while 40 girls scored an average of 88 marks. What is the average marks of all students together? (Ro...