In a row of 40 students, Ravi is 12th from the left end and Meera is 15th from the right end. How many students stand between them?

12Correct answerYour answer13Correct answerYour answer14Correct answerYour answer15Correct answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer B

Correct answer: B

Put both positions on the same scale. Meera is 15th from the right, so from the left she is $40 - 15 + 1 = 26$ th.
Ravi is 12th from the left.
The students strictly between positions 12 and 26 are those from 13 to 25, which is $26 - 12 - 1 = 13$ students.

Worth noting

Subtracting 1 is what distinguishes "between them" from "from one to the other". The 14 on offer is the count that includes one of the two named students.

Concept: Converting a position from one end to the other
Typical timeTypical: 80 s
Your timeYours: —

The rule this testsPosition in a row

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Ten questions from Ranking and Ordering, at your own pace.

In a row of 40 students, Ravi is 12th from the left end and Meera is 15th from the right end. How many students stand between them?

Explanation