Amy has to go to three different stores this week. How many ways can she go to one or more stores today? Options
A) 19
B) 26
C) 24
D) 9
E) 7
Amy has to visit at least one of three stores.   = &gt; 2^3 - 1 = 7   7
<result>E</result>
Amy has to go to three different stores this week. How many ways can she go to one or more stores today?