Question
A printer uses a total number of 4893 digits in order to
number all the pages of his book. He starts with the digit 1 for the first page of the book. How many pages does the book have?Solution
1.digit pages = 1 to 9 = 9 2.digits pages = 10 to 99 = 90 3.digits pages = 100 to 999 = 900 4 digit pages = let’s say x Now, Number of digits used till 999 pages = 9*1 + 90*2 + 900*3 = 9 + 180 + 2700 = 2889 Therefore, 4x + 2889 = 4893 4x = 2004 X = 501 So, total pages are 9 + 90 + 900 + 501 =1500
In 1526 who defeated the Sultan of Delhi, Ibrahim Lodi, at Panipat and captured Delhi and Agra?
India’s First Agri Chatbot Ama KrushAI Launched in Odisha, is developed by which of the following Institutions?
Who among the following is the supreme commander of the Indian armed forces?
Which of the following is not correctly matched?
According to National Multidimensional Poverty Index 2023 (A Progress Review), what was the proportion of population in multidimensional poverty (Headco...
What percentage of stake did Zurich Insurance acquire in Kotak General Insurance?
The Monetary Policy Committee (MPC) at its meeting in December 7, 202 decided to increase the Bank Rate to how much Basis point/percent?
Which of the following Articles of the Constitution of India provides that the Governor appoints the Chief Minister and later, the Chief Minister recomm...
Wake up India book was written by-
In August 2023, the Central government has granted a _______ extension to Cabinet Secretary Rajiv Gauba, making him the longest-serving cabinet secretar...
Relevant for Exams:
