1.

Some equations are solved on the basis of a certain system. On the same basis, find out the correct answer for the unsolved equation.8 x 7 x 5 = 578; 11 x 10 x 9 = 91011; 3 x 1 x 2 = 213; 7 x 4 x 2 = ?

A. 56
B. 247
C. 128
D. 282
Answer» C. 128


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