Question
Are the given numbers form an AP? If they form an AP, write the next two terms: $ -2, 2, -2, 2, -2, ...$
✓
Answer
From the given numbers,we can have
$ a_2-a_1=2-(-2)=2+2=4 $
$ a_3-a_2=-2-2=-4$
$\text { As } a_2-a_1 \neq a_3-a_2 $,
i.e. the common difference is not same, so the given list of numbers does not form an $AP$. Thus, we cannot find the next two terms.
$ a_2-a_1=2-(-2)=2+2=4 $
$ a_3-a_2=-2-2=-4$
$\text { As } a_2-a_1 \neq a_3-a_2 $,
i.e. the common difference is not same, so the given list of numbers does not form an $AP$. Thus, we cannot find the next two terms.
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