How many different subsets of the set {0, 1, 2, 3, 4, 5,6,7} do not contain 0? Select the correct option.
A) A.16	B) B.72	C) C.93	D) D.32	E) E.64
Number of subset   Since we have 7 digits other than 0, we can take any numbers from the set of 7 to make a subset. Also it is a matter of selection and not arrangement.So we will consider combinations.   7c1+7c2+7c3+7c4+7c5+7c6+7c7=92   And one set is the NULL set having no elements in it so    92+1= 
<gadget id="calculator"> 92+1</gadget>
<output>93</output>
93.   ANSWER C.93.
<result>C</result>
How many different subsets of the set {0, 1, 2, 3, 4, 5,6,7} do not contain 0?