Q. p3 + q3 + r3 – 3pqr = 4. If a = q + r, b = r + p and c = p + q, then what is the value of a3 + b3 + c3 – 3abc?
A) 8
B) 4
C) 12
D) 2
✔ Correct Answer: 8
Exam Insight
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A) 8
B) 4
C) 12
D) 2
✔ Correct Answer: 8
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