Question

A book is lying open Which of the following could be the sum of the page numbers of the two facing pages? *​

Answer 1

Concept:

• When a book is lying open, its two facing pages have page numbers as even and odd or odd and even.

• The sum of an even number and an odd number is always an odd number.

To find:

The sum of the two facing pages

Step-by-step explanation:

Since the pages have page numbers even and odd, then their sum is also odd (since even + odd = odd).

Let us understand it better with an examples:

• If page numbers are 46 and 47, their sum is (46 + 47) = 93, an odd number.

• If page numbers are 85 and 86, their sum is (85 + 86) = 171, an odd number.

• In general, if the page numbers are x - 1 and x, their sum is (x - 1 + x) = 2x - 1, an odd number.

Final answer:

The required sum will always be an odd number.

Answer 2

Answer:

Answer 100...............