railway RRB JE (CBT I + CBT II) Mock Test 2024 Quantitative Aptitude Algebra Identities

यदि a (a + b + c) = 45; b (a + b + c) = 75 और c (a + b + c) = 105 है, तो a2 + b2 + c2 का मान ज्ञात कीजिए।

1
90
2
625
3
225
4
83
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