Question

if P Q R and S are in ap then r-q is equal to​

Answer 1

Answer:

p-q

because, p, q, r is a same value... so, It's a equal form..

Answer 2

SOLUTION

COMPLETE QUESTION

If p , q , r and s are in AP then r - q is equal to

(a) s - p

(b) s - q

(c) s - r

(d) None of these

EVALUATION

Here it is given that p , q , r and s are in AP

So there exists common difference

Let the common difference = d

So we have ,

d = 2nd term - 1st term = q - p

d = 3rd term - 2nd term = r - q

d = 4th term - 3rd term = s - r

Thus from above we see that

q - p = r - q = s - r

FINAL ANSWER

Hence the correct option is (c) s - r

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