Finding missing letters

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Question 10 Important Deleted for CBSE Board 2025 Exams You are here

Last updated at April 16, 2024 by Teachoo

Question 10 Find the values of the letters in each of the following and give reasons for the steps involved. Here, A + B ends with 9 A can be 0, 1, 2, 3,………..8, 9 B can be 0, 1, 2, 3…………8, 9 If we take maximum values of A and B, i.e. For A = 9 , B = 9 A + B = 9 + 9 = 18 ∴ A + B ≠ 19 So, A + B must be 9 ∴ A + B = 9 Hence, 2 + A will ends with 0. We put different values of A, and check which ends with 0 ∴ A = 8 Putting A = 8 Here, ∴ B = 1 Checking Putting A = 8, B = 1 Hence verified ∴ A = 8 and B = 1