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Question


Find the values of A and B    1 2 A+ 6 A B   A 0 9


Options:
A .   A = 8, B = 1
B .   A = 1, B = 8
C .   A = 9, B = 3
D .   A = 3, B = 9
Answer: Option A
:
A

We know that A + 2 is a two digit number with unit digit as 0. So, A = 8


A + B is a single digit number and is equal to 9. 
A + B = 9
       B = 9 - A
       B = 9 - 8 = 1
Therefore, A = 8 and B = 1
   1 2 8+ 6 8 1   8 0 9



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