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Ranking and Ordering · Question 34 of 66

Question 34

MediumOriginal question

In a row of people facing north, Salim is 15th from the left end and Kriti is 20th from the left end. They interchange places, and Salim is then 12th from the right end. How many people are in the row?

Options for question 34

Show the answer and explanation
CorrectNot quiteAnswer B

Correct answer: B

Explanation

  1. After the swap Salim is in Kriti's old place, 20th from the left.

  2. The same place is 12th from the right.

  3. Total =20+12−1=31= 20 + 12 - 1 = 31.

Worth noting

26 is 15+12−115 + 12 - 1, which uses Salim's OLD left position with his NEW right position; those are two different places.

Concept
Interchange when both people are counted from the same end
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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