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

যদি x + y + z = 18, xyz = 81 এবং xy + yz + zx = 90 হয়, তাহলে x3 + y3 + z3 + xyz এর মান কত?

1
1321
2
1250
3
1225
4
1296
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