Answers

2015-08-15T16:50:25+05:30
45 is the digit in which when 9 is added it becomes 54
0
May I please know how?
yeah first revise the table of 9 u will get 45 and 54 as the numbers having their digits interchanged. as it is the table of 9 there has to be a difference of 9
dont go in detail plz