Q. If a(a + b + c) = 45, b(a + b + c) = 75 and c(a + b + c) = 105, then what is the value of (a2 + b2 + c2 )?
A) 83
B) 75
C) 225
D) 217
✔ Correct Answer: 83
Exam Insight
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A) 83
B) 75
C) 225
D) 217
✔ Correct Answer: 83
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