Question

If p, q, r and s are in A.P. then r - q is ______.

Options

• s - p

• s - q

• s - r

• None of these

Answer 1

If p, q, r and s are in A.P. then r - q is s - r.

Explanation:-

Since p, q, r, s are in A.P.

∴ (q - p) = (r - q) = (s - r) = d (common difference)