Quantitative Aptitude Number System Tutorial (Study Material)
Numbers are collection of certain symbols or figures called digits. The most common Number System is Decimal System which has ten symbols, each representing a digit These are 0,1,2,3,4, 5,6,7,8 and 9.
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A combination of,these figures representing a number is called a numeral. We also have Binary Number System. It uses only 0 and 1. There are other Number Systems too.Every digit in a number has a face value and a place value. The face value of a digit equals the value of the digit itself, irrespective of its place in the numeral.
Numbers and their Classification
Test for Divisibility of Numbers
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