T2+T6=370 ar+ar5=370 T3⋅T5=49 ar2⋅ar4=49 a2r6=49 ar3=+7,a=r37 ar(1+r4)=370 r27(1+r4)=370,r2=t t1(1+t2)=310 3t2−10t+3=0 t=3,31 Increasing G.P. r2=3,r=3 T4+T6+T8 =ar3+ar5+ar7 =ar3(1+r2+r4) =7(1+3+9)=91
In an increasing geometric progression of positive terms, the sum of the second and sixth terms is 370 and the product of the third and fifth terms is 49 . Then the sum of the 4th ,6th and 8th terms is equal to :
Held on 8 Apr 2024 · Verified 6 Jul 2026.
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