Short answerEasy1 mark
8(ii)
The fourth term of a Geometric Progression (G.P.) is 16 and its seventh term is 128. Find its:
first term
Topic: Geometric progression
Previous-year question practice database
Answer
Exam answer
First term a = 2.
Explanation
Substitute r=2 into the given term relation.
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Assertion (A): The 9th term of a Geometric Progression (G.P.) 6, −12, 24, −48, ... is a positive term.
Reason (R): The value of (−2)⁸ is always positive.
(A) is true and (R) is false.
(A) is false and (R) is true.
Both (A) and (R) are true and (R) is the correct explanation of (A).
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