A twodigit number becomes fivesixth of itself when its digits are reversed. The two digits differ by one. The number is 


(a) 
45 
(b) 
54 
(c) 
56 
(d) 
65 
A twodigit number becomes fivesixth of itself when its digits are reversed. The two digits differ by one. The number is 


(a) 
45 
(b) 
54 
(c) 
56 
(d) 
65 
Since the number reduces on reversing the digits, so ten’s digit is greater than the unit’s digit. let the unit’s digit be
Then, ten’s digit =
Hence, the required number = 54.