defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Mathematics Sequences and Series Arithmetic Progressions
\(\frac{1}{b \ - \ a} \ + \ \frac{1}{b \ - \ c} \ = \ \frac{1}{a} \ + \ \frac{1}{c}\), then a, b, c are in
1
AP
2
GP
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HP
4
None of these