Question

Rehaan can see patterns in everything. He saw some books kept in sets on the shelves of his class room. The first shelf had 28 books, the next had 23 books, the next one 18 and the next 13. He saw a pattern...can you guess how many books were on the next shelf?

• A. 8
• B. 5
• C. 18
• D. 10

Answer 1

The correct option is A

8

8 books.
If we look carefully, the pattern is:
28 - 5 = 23, 23 - 5 = 18, 18 - 5 = 13, so the number of books in the next shelf would be 13 - 5 =8