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Possibility of two digit no whose sum is 9

18,27,36,45,54,63,72,81

Now add 9 to each no mentioned above

27,36,45,54,63,72,81,90

See after 3rd comma 45 and 54. reverse of 45 is 54. 54 is 9 more than 45. So 45 is the original

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45 and 54

Q: The sum of the digits of a two-digit number is 9 if the digits are reversed the new number is 9 more than the original number?

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192

Possibility of two digit no whose sum is 17 89 and 98 Reverse of 89 is 98. 98 is 9 less than the original no 89. 89 is original no

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Possibility of two digit no whose sum is 10 19,28,37,46,55,64,73,82,91 Now add 54 to each no mentioned above 73,82,91,100,109,118,127,136,145 See after 1st comma 28 and 82 Reverse of 28 is 82. That no 82 is 54 more than the no 28. So 28 is the original

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after 11yrs.

11yrs.

47 Impossible problem!

Find a four digit number whose digits will be reversed when multiplied by nine?