How many figures are required to number the pages of a book containing 365 pages ........

Quantitative Aptitiude (CLAT) Number System

How many figures are required to number the pages of a book containing 365 pages?

897

967

977

987

1 to 9 = 9 * 1 = 9
10 to 99 = 90 * 2 = 180
100 to 365 = 266 * 3 = 798
So, 798 + 180 + 9 = 987

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