Question : Directions: In a class, Ena ranked eighteen from the top and thirty-ninth from the bottom among those who passed an examination. Ten students did not appear in the examination and four failed. What is the total number of students in the class?
Option 1: 40
Option 2: 60
Option 3: 56
Option 4: 70
Correct Answer: 70
Solution :
Given:
Ena's rank from the top = 18 and Ena's rank from the bottom = 39
Total number of students who passed the examination = Position of Ena from the top + Position of Ena from the bottom – 1
= 18 + 39 – 1 = 56
So, the number of students who passed the examination = 56
The number of students who did not appear in the examination = 10
The number of students who failed in the examination = 4
Total number of students in the class = Number of students who passed + Number of students who failed + Number of students who didn't appear
= 56 + 10 + 4 = 70
Therefore, there are a total of 70 students in the class. Hence, the fourth option is correct.
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