railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Algebra Identities

If x + y + z = 10, x2 + y2 + z2 = 30, then the value of x3 + y3 + z3 - 3xyz is______.

1
-70
2
-10
3
-30
4
-50
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