Anu and Vinay are ranked seventh and eleventh respectively from the top in class of 31 students .What will be their respective ranks from the bottem in the class ?

Options

A. 20th and 24th
B. 24th and 20th
C. 25th and 21st
D. None of these

Explanation

Number of students after Anu un the class
`=(31-7)=24`
Now Anu is rank from bottom `=24+1=25`
So Anu is 25th from bottom
Number of students after Vinay in the class
`=(31-11)=20`
Now . Vinay is rank from bottom `=20+1=21`
So , Vinay is 21st from the bottom .
Note 1 will be added , if questions is ask about another side and one side and one side is aiready given .
This questions can be solved by formula also Rank of a person from lower or right end = (total number of persons in row)-Rank of that person from upper or lest end )+1 Anu .s rank from the bottom `=31-7+1=25`
Vinay .s rank from the bottom `=31-11+1`
`=21`