We are building EduLadder(ELADR) - Protocol

The Eladr Protocol is a decentralized, security and efficiency enhanced Web3 noSQL database powered by IPFS as the data storage layer https://ipfs.io/, and the Cardano block chain as the rewards token platform, https://cardano.org/. It provides a JSON based, IPFS layer 2 solution for data indexing and retrieval in an 'append only' file system built with open source Node.js API libraries.

The ELADR token was designed to incentivize and reward community members as a proof of contribution. Token holders are also granted access to EduLadder.com premium features as well as associated ELADR token enabled apps.

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CSP-2-GK-2019-->View question


Asked On2019-07-10 14:05:36 by:Gaganpreet-Gandhi

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Solve in  a similar way as below

e.g. A printer numbers the pages of a book starting with 1 and uses 3189 digits in all. How many pages does the book have.

A: The pages of the book are numbered starting from 1. A total of 3189 digits are used to number all the pages. For pages 1 - 9, 9*1 = 9 digits are required.

For pages 10 - 99, 90*2 = 180 digits are required

The number of digits left is 3000

As digits from 100 to 999 require 3 digits each, 3*900 = 2700 digits are used. There are 300 digits remaining that are used to number pages 1000 - 1074

The book has 1074 pages in all. ( this example)


Answerd on:2019-08-26 Answerd By:Tanisha-Garg

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