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

ଯଦି (a + b + c) = 16, ଏବଂ  (a2 + b2 + c2) = 90, ତେବେ (ab + bc + ca) ର ମୂଲ୍ୟ ନିର୍ଣ୍ଣୟ କର । 

1
84
2
83
3
82
4
81
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