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If a+b+c = 6 and a^(3) + b^(3) + c^(3) -...

If `a+b+c = 6` and `a^(3) + b^(3) + c^(3) - 3abc = 126`, then `ab + bc + ca` is equal to :

A

5

B

6

C

8

D

12

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The correct Answer is:
A
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