1.

The values of A and B in the given addition respectively are ___. \[\underline{\begin{align}   & \underline{\begin{align}   & \text{    2 3 A} \\  & \text{+ A 3 B} \\ \end{align}} \\  & \text{    6 B 1} \\ \end{align}}\]

A.  4, 7
B.  7, 4
C.  5, 6
D.  6, 5
Answer» B.  7, 4


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