If a * b = a + b +ab then the value of 12 * 4 is :

1.	If a * b = a + b +ab then the value of 12 * 4 is :
A.	20
B.	21
C.	48
D.	19
Answer» E.

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If a * b = a + b +ab then the value of 12 * 4 is :

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