1. If p and q represent two numbers then which of the following expressions always calculates
the distance between them when plotted on a number line?
(1) p-q
(3) p+q
(2)|p-q|
(4) \p + q/

1 If p and q represent two numbers then which of the following expressions always calculates the distance between them when plotted on a number line 1 pq 3 pq 2 class=