A librarian arranges books on shelves such that the number of books on each shelf follows the sequence 3, 6, 9, 12. How many books will be on the 5th shelf?
Q1. A librarian arranges books on shelves such that the number of books on each shelf follows the sequence 3, 6, 9, 12. How many books will be on the 5th shelf?
Answer: 15
Explanation: The sequence increases by 3 each time, so for the 5th shelf, it will be 12 + 3 = 15