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

If x + y + z = 18, xyz = 81 and xy + yz + zx = 90, then the value of x3 + y3 + z3 + xyz is :

1
1321
2
1250
3
1225
4
1296
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