Rank Interchange Problem
Rank Interchange Problem
Rank Interchange Problem: In these type of question the candidate is give the rank of two person from left and right end respectively. Further the candidate is given the position of one person after they interchange their positions. The position of the other person is to be calculated.
Illustration : - In a row Ravi is 22nd from left end and Priya is 23rd from right end. When they interchange their position respectively, then Priya becomes 31st from right end. Then what will be Ravi's position from left interchanging ?
A. 27 B. 28 C. 30 D. 31 E. Either A or B
Answer: B
Solution : - Given
Rank of Ravi from the Left End = 22
Rank of Priya from the Right end = 23
After interchange
Rank of Priya from the Right end = 31
As Priya has occupied the position of Ravi, and we know the rank of Ravi from left end before interchange
So Rank of Priya from the Left End = 22
Total No = Rank of Ravi from left end after interchange + Rank of Priya from right end after interchange - 1.
Then Total No. = 31 + 22 - 1 = 53 - 1= 52
Ravi rank from left after interchange = Total No. - Rank of Ravi from right after interchange + 1.
As Ravi has occupied the position of Priya, and we know the rank of Priya from right end before interchange
So Rank of Ravi after interchange from the Right End = 23
Then, Rank of Ravi from left end after interchange = 52 - 23 + 1 = 29 + 1 = 30
Hence the correct option is C
In a row A is 20th from left end and B is 22nd from right end. When they interchange their position respectively, then B becomes 31st from right end. Then what will be A's position from left interchanging ? | |||
| Right Option : D | |||
| View Explanation | |||
In a row A is 10th from left end and B is 10th from right end. When they interchange their position respectively, then B becomes 21st from right end. Then what will be A's position from left interchanging ? | |||
| Right Option : C | |||
| View Explanation | |||
In a row Komal is 11th from left end and Sonam is 15th from right end. When they interchange their position respectively, then Sonam becomes 21st from right end. Then what will be Komal's position from left after interchanging ? | |||
| Right Option : A | |||
| View Explanation | |||
Students / Parents Reviews [20]
My experience with Abhyas Academy has been very good. When I was not in Abhyas whenever teacher ask questions I could not speak it confidently but when I came in Abhyas, my speaking skills developed and now I am the first one to give the answer of teachers question.
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Cheshta
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Aman Kumar Shrivastava
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Om Umang
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9thIn terms of methodology I want to say that institute provides expert guidence and results oriented monitering supplements by requsite study material along with regular tests which help the students to improve their education skills.The techniques of providing education helps the students to asses...
Aman Kumar Shrivastava
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8thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
