User:Shauryavaish

My law for inverse digits (For 2-digit no.) If there is a number,ab, with digits a and b, its inverse will be ba. If the difference between the digits is 1, then the difference between the numbers will be 9. For eg. 45 and 54. If difference between the digits is two, then the difference between the numbers will be 9×2=18. For eg. 46 and 64. 6-4=2.   2×9=18 64-46=18. The rule is that in two digit numbers, if the difference between the digits of the number is   multiplied by 9, we get the difference between the number and the number formed by reversing its digits.

(For 3-digit no.) In 3 digit no., same process is followed of reversing the digits. The difference is that instead of 9, we have to multiply the difference of the digit at hundreds place and digit at unit's place, by 99, to obtain the difference between the given 3 digit no. and the number formed by reversing its digits. For eg. 258 and 852 8-2=6.  99×6=594 852-258=594.

SHAURYA VAISH CLASS IX SPRINGFIELD PUBLIC SCHOOL YAMUNANAGAR, HARYANA 135001