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

यदि (a3 + b3 + c3 - 3abc) = 405 है, और (a - b)2 + (b - c)2 + (c -a)2 = 54 है, तो (a + b + c) का मान ज्ञात कीजिए।

1
15
2
45
3
9
4
27
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