Question bank/JEE Main/Mathematics
JEE MainMathematicsModerateSequences and Series
ar, ar^2, ar^3,.......... ar^10
18 6
Show answer and solution
Given [IMAGE]...(1)
Also, [IMAGE]...(2)
from (1) and (2)
[IMAGE] Now P = a^10r^55 = (a^2 r^11)^5 = 3^5 = 243
Also, [IMAGE]...(2)
from (1) and (2)
[IMAGE] Now P = a^10r^55 = (a^2 r^11)^5 = 3^5 = 243
Source: Grass-G / M-03 Paper 1 Mathematics 21-8-2020_Final.docx
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