MULTIPLICATION BY 9
Have you noticed that any number when multiplied by nine and you add all the digits of the number you got, it adds up to 9 ?
Consider:
1) 123 x 9 = 1007, 1+1+0+7 = 9
2) 4789 x 9 = 43101, 4+3+1+0+1 = 9
Have you noticed that any number when multiplied by nine and you add all the digits of the number you got, it adds up to 9 ?
Consider:
1) 123 x 9 = 1007, 1+1+0+7 = 9
2) 4789 x 9 = 43101, 4+3+1+0+1 = 9
