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

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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