Q1 of 110 Page 48

Find out which of the following sequences are geometric sequences. For those geometric sequences, find the common ratio.

(Note: Sequences are in G.P. if they have common ratios

i.e., if

)

Given: a₁ = 4, a₂ = -2, a₃ = -1,

Now,

And,

Therefore,

Now, ∵ the ration is not same,

Find out which of the following sequences are geometric sequences. For those geometric sequences, find the common ratio.

Find the 10th term and common ratio of the geometric sequence .

If the 4th and 7th terms of a G.P. are 54 and 1458 respectively, find the G.P.

Questions · 110

2. Sequences and series of real numbers

1 2 3 4 5 6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1 1 1 1 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1 2 3 4 5 6 7 8 9 10 11 12 1 1 1 1 1 1 2 2 3 4 5 6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20