Question:medium

In a row of girls, Rimmi and Mimmi occupy ninth place from right end and tenth place from left end respectively. If they interchange their positions then Rimmi and Mimmi will occupy seventeenth place from right end and eighteenth place from left end respectively. How many girls are there over all in all the given row ?

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When two persons interchange, the new position of one equals the old position of the other. Use: Total $=$ (old position from one end) $+$ (new position from same end after interchange) $-$ 1, OR Total $=$ left rank $+$ right rank $-$ 1.

Updated On: Mar 26, 2026

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The Correct Option is B

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