If r = ||s – 3| – 2|, for how many values of s is r = 7?
Choose the correct choice from the following choices
A) 4 B) 5 C) 2 D) 1 E) 3
r = ||s – 3| – 2| can be 4 only and only when s-3= +/-9. so there are 2 values of s   Answer : 2
<result>C</result>
If r = ||s – 3| – 2|, for how many values of s is r = 7?