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1. |
If a2 + b2 + c2 = 16, x2 + y2 + z2 = 25 and ax + by + cz = 20, then the value of \(\frac{{a + b + c}}{{x + y + z}}\) |
A. | 3/5 |
B. | 5/3 |
C. | 4/5 |
D. | 5/4 |
Answer» D. 5/4 | |