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Ranking and Ordering · Question 37 of 66

Question 37

MediumOriginal question

Ishaan is 11th from the left end of a row facing north. He interchanges places with Uday. After the swap, Ishaan is 18th from the left end and Uday is 22nd from the right end. How many people are in the row?

Options for question 37

Show the answer and explanation
CorrectNot quiteAnswer A

Correct answer: A

Explanation

  1. After the swap Uday stands in Ishaan's old place, which is 11th from the left.

  2. The same place is 22nd from the right (Uday's new position).

  3. Total =11+22−1=32= 11 + 22 - 1 = 32.

Worth noting

39 is 18+22−118 + 22 - 1: Ishaan's 18th-from-the-left and Uday's 22nd-from-the-right describe two different places.

Concept
Matching both new positions to the right place
Typical time
70 s
Your time
—
The rule this testsInterchanged positions
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Ten questions from Ranking and Ordering, at your own pace.

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