Question
Download Solution PDFStudent are sitting in a row in which the position of X is 17th from the left and that of Y is 14th from the right. If they interchange their positions, X’s position becomes 7th from the left. How many students are there in the row?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFDraw X and Y’s position in straight line,
Now they interchange their position and X becomes 7th from left end.
Now we can see X is 7th from left end and 14th from right end.
So, total boys in this row = 7 + 14 – 1 = 20.
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