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In a row of boys, if A who is 10th from the left and B who is 9th, from the right, interchange their positions, A becomes 15th from left. How many boys are there in the row ?1. 232. 313. 284. 27 |
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Answer» Correct Answer - Option 1 : 23 Calculation: Position of A from left = 10th Position of B from right = 9th After interchanging positions, Position of A from left = 15th Total number of students in the row = (15 + 9)–1 ⇒ 24–1 ⇒ 23 ∴ Boys in the row is 23 |
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