state gov OSSSC RI, ARI, AMIN, SFS, ICDS Supervisor Combined Mock Test 2023-25 Quantitative Aptitude Algebra Identities

यदि a + b = 17 और a - b = 15 है, तो ab का मान ज्ञात कीजिए?

1
13
2
23
3
15
4
16
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