state gov BSSC SSO Mock Test Series 2025 Quantitative Aptitude Algebra Identities

If the average of p, q and r is A and pq + qr + rp = 0, then the value of \(\rm\frac{p^2 + q ^2 + r^2}{27} \) is:

1
A2
2
3A2
3
9A2
4
\(\rm\frac{A^2}{3} \)
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