In a geometric progression, product of 11th term, 18th term and 20th term is equal to the product of 28th term and 5th term. Which of the following is necessarily true about that geometric progression?
In a geometric progression, product of 11th term, 18th term and 20th term is equal to the product of 28th term and 5th term. Which of the following is necessarily true about that geometric progression?
Option 1 -
One of terms of this GP has to be equal to zero.
Option 2 -
One of the terms of this GP has to be equal to one.
Option 3 -
This GP will have infinite terms.
Option 4 -
Common ratio of this GP will be less than 1.
Asked by Shiksha User
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1 Answer
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Correct Option - 2
Detailed Solution:ar10 * ar17 * ar19 = ar27 * ar4
a3r46 = a2r31
ar15 = 1
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