CSATNumber System & SeriesDigits Arithmetic2024

What is the number of fives used in numbering a 260-page book?

A

55

B

56

C

57

D

60

Correct Answer: Option B

Explanation

To find the number of 5s in pages 1 to 260, I will use the *Decomposition Strategy* seen in previous years [64] to b

More Number System & Series PYQs

View all Number System & Series questions →

Master UPSC Revision

Get 10,000+ topic-wise MCQs, spaced repetition, daily CSAT challenges, and detailed performance analytics.

Coming Soon to Play Store
Coming Soon to Play Store