Mathematics · Progression and Series
Let a, b and c be non-zero distinct real numbers such that a, b, c are in A.P. and a, c, b are in G.P. Then which of the following is correct?
- 1a, 4b, 2c are in A.P.
- 2a, 2b, 3c are in A.P.
- 3a, -2b, 4c are in G.P.✓
- 4a, b, c are in G.P.
Correct answer
a, -2b, 4c are in G.P.
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