CHAPTER-I: NUMBER SYSTEM
1.NUMBERS I. Numeral: A group of digits denoting a number. (i.e. 1,2,3,4,5,6,7,8,9). example: 678467437 we represent this number as: 6 X 10 8 (ten crores) = 600000000. 7 X 10 7 (crores) = 70000000. 8 X 10 6 (ten lacs) = 8000000. 4 X 10 5 (lacs) = 400000. 6 X 10 4 (ten thousands)= 60000. 7 X 10 3 (thousands) = 7000. 4 X 10 2 (hundreds) = 400. 3 X 10 1 (tens) = 30. 7 X 10 0 (units) = 7. ...