Student are sitting in a row in which the position of X is 17 th from the left and that of Y is 14 th from the right. If they interchange their positions, X’s position becomes 7 th from the left. How many students are there in the row?
20
Draw X and Y’s position in straight line,
Now they interchange their position and X becomes 7 th from left end.
Now we can see X is 7 th from left end and 14 th from right end.
So, total boys in this row = 7 + 14 – 1 = 20.Similar Questions
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Important Questions from Ordering and Ranking
- Ariel ranked \(6^{th}\) from the top and \(18^{th}\) from the bottom in her class. How many students are there in the class?
- Each of the digits in the number 8731245 is arranged in ascending order from left to right. The position(s) of how many digits will remain unchanged as compared to that in the original number?
- Varun ranked 34th from the top and 11th from the bottom in his class. How many students are there in his class?
- Piyush ranked 35th from the top and 18th from the bottom in his class. How many students are there in his class?
- Each of the digits in the number 81674293 is arranged in ascending order from left to right. Which of the following digits will be fourth from the left?
