Reasoning • Order & RankingHard
In a row, Q is 5th from the left end and D is 9th from the right end. When Q and D interchange their positions, Q becomes 13th from the left end. How many people are there in the row?
A. 22
B. 21✓ Correct Answer
C. 13
D. 19
💡 Solution & Explanation
After the swap, Q stands where D stood. So D's old place is 13th from the left and 9th from the right. Total = 13 + 9 − 1 = 21.
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