Question

The 4th, 6th and the last term of a geometric progression are 10, 40 and 640 respectively. If the common ratio is positive, find the first term, common ratio and the number of terms of the series.

Accepted Answer

<h3>Answer</h3>
<p><img src="images/Maths/1675-ans.jpg" width="677" height="260" loading="lazy" data-path="local-images:/Maths/1675-ans.jpg" /></p>