Some girls stand in a row facing north. Ishita is 14th from the left end and 9th from the right end. How many girls are in the row?

5Correct answerYour answer21Correct answerYour answer22Correct answerYour answer23Correct answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer C

Correct answer: C

Counting from the left, Ishita is the 14th girl; counting from the right, she is the 9th.
Adding $14 + 9$ counts Ishita twice, so subtract 1.
Total $= 14 + 9 - 1 = 22$ .

Worth noting

23 forgets that Ishita was counted from both ends. 5 is the difference of the two positions, which means nothing here.

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

Explanation