MULTIPLICATION BY 9
Have you noticed that any number when multiplied by nine and you add all the digits of the product, you see that it adds up to 9 ?
Consider:
1) 123 x 9 = 1107, 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 product, you see that it adds up to 9 ?
Consider:
1) 123 x 9 = 1107, 1+1+0+7 = 9
2) 4789 x 9 = 43101, 4+3+1+0+1 = 9
How do you like it ?
Try out a few numbers your self !
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