Question

A bookmark was inserted between two page numbers whose sum is 825. What are the
page numbers?

Answer 1

412 and 413

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The two page numbers represent two subsequent numbers.

Let the numbers be x and x + 1, then we can set equation:

• x + x + 1 = 825
• 2x = 824
• x = 412

Hence the page numbers are 412 and 413.