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Question

Find A and B. [3 MARKS]

2 A B+ A B 1 B 1 8


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Solution

Concept: 1 Mark
Application: 2 Marks

B + 1 = 8.

B = 7.

The last digit of B + A = 1.

Hence A = 4 such that 7+ 4 = 11.

Hence A = 4, B = 7.


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