The sum of the digits of a two-digit number is 9. If the digits of the number are reversed, the new number formed is 45 more than the original number. What is the original number?

The sum of digits of a 2-digit number is 12. When the digits are reversed, the number becomes greater by eighteen. What is the difference between the digits in the number ?

A 2-digit number is such that the sum of the number and the number obtained by reversing the order of the digits of the number is 55. Further, the difference of the given number and the number obtain…

The value of a 2-digit number is 5 times the sum of the digits. What is the product of the digits ?

Seven times a two-digit positive number is equal to four times the number obtained by reversing the order of the digits. How many such two-digit numbers are there?

The product of the digits of a two-digit number is 36. If 45 is subtracted from the number, then the digits interchange mutually. The number is