Discussion
In a row of books a book of English is 16th from left end of row. A book of Mathematics is 12th from the right end. If the Mathematics book is 6th to the right of the English book, then how many total books are in the row?
Answer: A
Correct answer: 33
The mathematics book is six places to the right of the English book, which is 16th from the left, so it stands 22nd from the left. It is also 12th from the right: \[ 22 + 12 - 1 = \mathbf{33} \]
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