The sum fo digits of a two-digits number is 9.If 27 is subtracted from the number then digit interchange their places. Find the number.

Form the pair of linear equations in the following problems and find their solutions (if they exist) by any algebraic method :-A number consisting of two-digits, is equal to 7 times the sum of its digits. When 27 is subtracted from the number, the digits interchange their places. Find the number

Form the pair of linear equations in the following problems, and find their solutions (if they exist) by the elimination method : The sum of the digits of a two-digit number is 9. Also, nine times this number is twice the number obtained by reversing the order of the number. Find the number.

One of the two digits of a two - digit number is three times the other digit.If you interchange the digits of this two-digit number and add the resulting number to the original numer , you get 88.What is the original number ?

One of the two digits of a two digit number is three times the other digit. If you interchange the digits of this two-digit number and add the resulting number to the original number, you get 88. What is the original number?

The last two digits of the number 19^(9^(4)) is