Problems in which sum(difference) of unit and ten place is given and its digits get interchanged after addition(subtraction) of a certain no

A number has two digits whose sum is 9. if 27 is added to the number , its digits get interchanged. Find the number.

What is the value of a two-digit number in which digit at tens place is greater than digit at unit place? A. The sum of the digits is 5. II. The difference of the squares of the digits is 15. C. The difference of their digits is 3.

In a three digit number, the digit in the units place is four times the digit in the hundred place. If the digits in the units place and the tens place are interchanged, the new number so formed is 1 more than the original number. If the digit in the hundred place is one third of the digit in the tens place, what is the original number?

In a two-digit number, the digit at the unit's place is 1 less than twice the digit at the ten's place. If the digits at unit's and ten's place are interchanged, the difference between the new and the original number is less then the original number by 20. the original number is

A 2 digit number is 3 times the sum of its digits. If 45 is added to the number, its digits are interchanged. The sum of digits of the number is

A three digit number is equal to 17 times the sum of its digits. If 198 is added to the number, the digits are interchange. The addition of first and third digit is 1 less than middle digit. find the number.

The ten's digit of a three digit number is 3. If the hundredth and unit digits are interchanged and the number thus formd is 396 more than the previous one. The sum of unit digit and hundred difit is 14, then what is the number ?