2001

JEE Main 2001 Mathematics question on Sequences and Series

If the positive numbers a,b,c,da, b, c, d are in AP. Then, abc,abd,acd,bcdabc, abd, acd, bcd are
  1. A.
    not in AP/GP/HP
  2. B.
    in AP
  3. C.
    in GP
  4. D.
    in HP
Show answer

Correct option: D

[2001]

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