Question

find the sum of first 5 terms of the GP whose first term is 1 and common ratio is 2 /3​

Answer 1

Answer:

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Step-by-step explanation:

11th

Maths

Sequences and Series

General Term of a G.P

Write down the first five t...

MATHS

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Asked on December 30, 2019 by

Manpreet Panchal

Write down the first five terms of the geometric progression which has first term 1 and common ratio 4.

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ANSWER

Let a and d be the first term and common ratio of the GP respectively.

Given a=1 and d=4.

Now, a

n

=ar

n−1

∴a

1

=a=1

a

2

=ar=1×4=4

a

3

=ar

2

=1×(4)

2

=16

a

4

=ar

3

=1×(4)

3

=64

a

5

=ar

4

=1×(4)

4

=256