 Hi and welcome to the session. Let us discuss the following question. Question says find the values of the letters in the following and give reasons for steps involved. Let us now move on to the solution. Now first of all we will rewrite the given question that is 4a plus 98 is cb3. Now we need to find values of 3 letters. They are a, b and c. Now study the addition in one column. What do you see? Sum of a and 8 is a number whose one digit is 3. So we can write a plus 8 gives a number whose one digit is 3. Now this happens only for a equal to 5. Clearly you can see if a is equal to 5 then 5 plus 8 is 13 and one digit of 13 is 3. Now 10th place of 13 is 1. Now 10th place of 13 is carry in 10th column. Now b is equal to the sum of 1, 4 and 9. Sum of 1, 4 and 9 is 14. Now we know that each letter in the puzzle stands for only one digit but these are two digits. So 1's place of 14 is equal to b. Now we can write 1 plus 4 plus 9 gives 14 whose 1's place is b. Therefore b is equal to 4. Now 10th place of 14 is carry in the 100's column. Now no 100's column is present here so we will write this one here as it is. So we get value of letter c as 1. So we can write 1 plus 4 plus 9 gives 14 whose 10's place is c. So value of c is 1. So the given puzzle can be solved as shown below. 45 plus 98 gives 143. So our final answer is value of a is 5, value of b is 4 and value of c is 1. This is our required answer. This completes the session. Hope you understood the solution. Take care and bye for now.