ExamVeda
Login
Home
This question belongs to Arithmetic Ability Algebra
Algebra
?

If x = y = 333 and z = 334, then the value of x3 + y3 + z3 - 3xyz is?

Answer & Solution
Correct Answer: Option C
x = y = 333,     z = 334
⇒ x3 + y3 + z3 - 3xyz = $$\frac{1}{2}$$ (x + y + z) [(x - y)2 + (y - z)2 + (z - x)2]
⇒ x3 + y3 + z3 - 3xyz = $$\frac{1}{2}$$ (333 + 333 + 334) (333 - 333)2 + (333 - 334)2 + (334 - 333)2
⇒ x3 + y3 + z3 - 3xyz = $$\frac{1}{2}$$ (1000) (0 + 1 + 1)
⇒ x3 + y3 + z3 - 3xyz = 1000
Examveda
Question posted by Examveda
Community

Join the Discussion

No comments yet Be the first to discuss this question.