How many geometric progressions are possible containing 27, 8 and 12 as three of its/their terms

How many geometrical isomers are possible for

Does there exist a geometric progression containing 27,8 and 12 as three of its term ? If it exists, then how many such progressions are possible ?

How many geometrical isomer of (A) is possible?

Assertion: There are infinite geometric progressions of for which 27,8 and 12 are three of its terms (not necessarily consecutive). Reason: Given terms are integers. (A) Both assertion and reason are correct and Reason is the correct explanation of assertion. (B) Both assertion and reason are correct and Reason is not correct explanation of assertion. (C) Assertion is correct and reason is false. (D) assertion is false and reason is correct.

How many geometrical isomers of this compound are possible ?

How many geometrical isomers of this compound are possible:

How many geometrical isomers are possible for Hepta-2, 5-dienoic acid:

How many geometrical isomers are possible for MA_(2)B_(2)C_(2) ?

The second term of an infinte geometric progression is 2 and its sum to infinity is 8. The first term is

The first two terms of a geometric progression add up to 12. The sum of the third and the fourth terms is 48. If the terms of the geometric progression are alternately positive and negative, then the first term is