Question

If p, q, r and s are in AP. Then r-q is what

Answer 1

Answer:

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Step-by-step explanation:

QUESTION ::

If p, q, r and s are in AP. Then r-q is what

ANSWER ::

By the property of AP

q - p = r - q

So

r - q = q - p

Answer 2

Answer:

d - the common difference of the ap

Step-by-step explanation:

Let d be the common difference

So q=p+d

r=p+2d

s=p+3d

So r-p=p+2d-(p+d)

=p-p+2d-d

=d