Let a_1, a_2, a_3,... be a G.P. such that at a_1 < 0, a_1+a_2=4 and a_3 + a_4=1 6. If \sum^{9}_{i=1}a_i=4\lambda, then \lambda, is equal to : [7 Jan 2020 Shift 2]

Sequences and Series Part 1

Section: Mathematics

Question : 23 of 100

Marks: +1, -0

Let a1,a2,a3,... be a G.P. such that at a1<0, a1+a2=4 and a3+a4=16. If

∑

i=1

ai=4λ, then λ, is equal to :

[7 Jan 2020 Shift 2]

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