Find the first 4 terms of the geometric sequence a1=40 and r=0.5

The first four terms of a GP are, {40, 20, 10, 5}.

Step-by-step explanation:

The nth term of a geometric progression is:

Here a₁ = first term and r = common ratio.

Given: a₁ = 40 and r = 0.50

The 1st term is,

The 2nd terms is,

The 3rd term is,

The 4th term is,

Thus, the first four terms of a GP are, {40, 20, 10, 5}.

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step-by-step explanation: