IMO Level 1 Mathematics Olympiad (SOF) Class 7: Questions 1 of 1022
MCQ▾
Question
The average of the two middle rational numbers if are arranged in descending order is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Answer
d.
Explanation

Write in descending order

First we take value of

Now, in descending order we get a new series of rational numbers

An average of middle two numbers =