A two digit number and the number with digits interchanged add up to 143 . In the given number the digit in unit's place is 3 more than the digit in the ten's place . Find the original number.

How many 4-digit numbers are there with no digit repeated?

A two digit numbers is such that the product of its digits is 12. When 36 is added to the number the digits interchange their places. Find the number.

In a three-digit number, when the tens and the hundreds digit are interchanged the new number is 54 more than three times the original number. If 198 is added three times the original number. If 198 is added to the number, the digits are reversed. The tests difit exceeds the hundreds digit by twice as that of the tens digit exceeds the unit digit. Find the originall number.

A two digit number is such that the product of its digits is 18, When 63 is subtracted to the number the digits interchange their places. Find the number.

A two digit number is such that the product of its digits is 8. When 18 is added to the number they interchange their places. Determine the number

The sum of a two digit number and the number formed by interchanging the digits is 110. If 10 is subtracted from the first number, the new number is 4 more than 5 times the sums of the digits of the first number. Find the first number.

The sum of the digits in the unit's place of all the 4-digit numbers formed by 3,4,5 and 6, without repetition , is