In a friendship gang Aravind has 2 gang, in how many ways can he invite one or more of the gang to his house?	Choose the correct choice from the following answers:
A) 25  B) 49  C) 3  D) 87  E) 36
Aravind can select one or more than one of his 8 gang.   =&gt; Required number of ways = 2^2 – 1= 3.   3
<result>C</result>
In a friendship gang Aravind has 2 gang, in how many ways can he invite one or more of the gang to his house?