Q1) for GP : 1) if a=-7, r=7/2, find t6 2) if t8=640, r=2, find a Q2) find 3 nos - Maths - Sequences and Series

Question

Q1) for GP :
1) if a=-7, r=7/2, find t6
2) if t8=640, r=2, find a
Q2) find 3 nos In GP such that their sum is 13/3 and the sum of
their sequence is 91/9
Q3) for GP 0 03, 0 06, 0 08, Find Sn
Q4) for GP if t3=36, t6=972, find S4
Q5) insert 2 nos Between 4 and 32, so that resulting sequence is a
GP

Akshay Kamthan · Accepted Answer

Dear Student,
Please find below the solution to the asked query:

Q 1 a=-7r=72t6=ar5=-7×725=-11764932Q 4Given G P
t3=36ar2=36 ---1t6=972 ar5=972 ---2dividing 1 and 2ar5ar2=97236r3=27r=3from 1, we geta=369=4S4=ar4-1r-1=481-13-1=80×42=160

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