Let the positive numbers a, b, c, d be in A.P., then abc, abd acd, bcd are [IIT Screening 2001]

Let the positive numbers a, b, c, d be in A.P., then abc, abd acd, b

1.	Let the positive numbers a, b, c, d be in A.P., then abc, abd acd, bcd are [IIT Screening 2001]
A.	Not in A.P./G.P./H.P.
B.	In A.P.
C.	In G.P.
D.	In H.P.
Answer» E.

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Let the positive numbers a, b, c, d be in A.P., then abc, abd acd, bcd are [IIT Screening 2001]

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