JEE Main 2021 — Sequences And Series Question with Solution
From: JEE Main 2021 (Online) 26th February Evening Shift
Question
If the arithmetic mean and geometric mean of the pth and qth terms of the
sequence 16, 8, 4, 2, ...... satisfy the equation
4x2 9x + 5 = 0, then p + q is equal to __________.
sequence 16, 8, 4, 2, ...... satisfy the equation
4x2 9x + 5 = 0, then p + q is equal to __________.
Enter your answer
Show full solutionCorrect answer: 10
Correct answer
10
Step-by-step explanation
Given,
A. M. , G. M. = 1 (As A. M. G. M)
Again, for the series
16, 8, 4, 2 ..........
term
term
Now, A. M. = & G. M. =
A. M. , G. M. = 1 (As A. M. G. M)
Again, for the series
16, 8, 4, 2 ..........
term
term
Now, A. M. = & G. M. =
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