If a2 + b2 + c2 = 16, x2 + y2 + z2 = 25 and ax + by + cz = 20, then th – McqOptions

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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

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