Question
How many students appeared in exam X or in exam
Z? Study the following information carefully and answer the given questions: There are 1000 students in a college. Out of 1000 students some appeared in exams ‘X’, ‘Y’ and ‘Z’ while some not. Number of student not appeared in any exam is equal to number of students appeared in exam ‘Z’ only. Number of students appeared in exam ‘Y’ is 360. Ratio of number of students appeared in exam ‘X’ and ‘Y’ only to number of students appeared in exam ‘Y’ and ‘Z’ only is 2:3. Number of student appeared in exam ‘X’ and ‘Z’ both is half of number of students appeared in only exam ‘Z’. Number of students appeared in exam ‘X’ only is 50% more than number of students appeared in ‘Y’ only. Number of students appeared in all the three exam is 4% of the total number of students in the college. Number of students appeared in ‘Y’ exam only is same as number of students appeared in ‘Y’ and ‘Z’ only.Solution
Total students = 1000 Let, students appear in exam Z only = a Total students appeared in exam Y = 360 Ratio of number of students appeared in exam X and Y only to students appeared in exam Y and Z only = 2:3 Students appeared in exam X and Z both = a/2 Number of students appeared in all three exams = (4/100) × 1000 = 40 Number of students appeared in Y exam only = No. of students appeared in Y and Z only = 3x Number of students appeared in exam X and Y only = (2/3) × 3x = 2x Now, 2x + 3x + 3x + 40 = 360 ⇒ x = 40 And, 12.5x + a + a/2 + a = 1000 => 5a/2 = 500 ⇒ a = 200 
Students appeared in exam X or in exam Z = 180 + 60 + 40 + 80 + 200 + 120 = 680
If there is any offending part in a statute, then, only the offending part is declared void and not the entire statute. This is the core theme of
As per the Central Vigilance Commission Act the Commission shall consist of ____________________
What does the Writ of Prohibition, which is used a means to exercise judicial review, mean?
Cognizance under section 498A of IPC can be taken:
What are the conditions subject to which a company may accept deposits from its members?
Which of the following is not considered unpublished price sensitive information?
In which of the following cases was it held that the Parliament did NOT have the power to amend the Fundamental Rights enshrined in the Constitution and...
The Act makes online mediation possible by:
What does trademark protect?
When did Special Economic Zones Act, 2005 received the assent from President
Relevant for Exams:
