Question

Find the 9th term and the general term of the progression:  1/4,-1/2,1,−2,.......

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Answer 1

Step-by-step explanation:

Here, the common difference is --- second term - first term

So, it is coming, -1/2 - 1/4 =

$\frac{ - 2 - 1}{ 4}$

= -3/4

But see, the difference between the fourth term and third term is -3. As, the two common differences do not match, so the series is not an Arithmatic Progression.

So, check the question again, and ask it again!!