square of a number: n^2=(n+1)^2-(n+1)-n square of a number =square of a after number-(after number)-(number) example=9^2=10^2-10-9 =100-10-9 =100-19 =81 19^2=20^2-20-19 =400-39 =361 29^2=30^2-30-29 =900-30-29 =841 39^2=40^2-40-39 =1600-40-39 =1521 49^2=50^2-50-49 =2500-50-49 =2401
procedure to find the factors of 48: when you want to start calculating the factors start from 1. 1 is a common factor for all numbers. the following table shows the factors of 48 1 X 48 = 48 2 X 24 = 48 3 X 16 = 48 4 X 12 = 48 6 X 8 = 48 8 X 6 = 48 12 X 4 = 48 16 X 3 = 48 24 X 2 = 48 48 X 1 = 48 as shown in the above table in first row multiply 1 by number 48. from second row try for all possible numbers so that their multiplication gives 48. then the first column shows the factors of number 48 which are shown in red colour: factors of number 48: 1,2,3,4,6,8,12,16,24,48. if you divide the 48 with any one of the above