1.

If A stands for\[+,\]B stands for\[-,\]C stands for\[x,\] then what is the value of\[\left( 10C4 \right)A\left( 4\,C4 \right)B\,6?\]

A. 60                               
B. 56
C. 50                    
D. 20
Answer» D. 20


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