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

a - b = 3 এবং a3 - b3 = 999 হলে, a2 - b2 এর মান নির্ণয় করুন।

1
60
2
62
3
64
4
63
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