A set of numbers has the property that for any number t in the set,t+2 is in the set. If -3 is in the set, which of the following must also be in the set? I. 4 II. 6 III. 3  Choose the correct choice from the following answers.
A) III only  B) II only  C) I only  D) I,III only  E) I,II only
question is asking for must be there elements.   According to the question if t is there t+2 must be there.   if -3 is the starting element the sequence is as follows.   S ={-3,-1,1,3,5....}   if -3 is not the starting element the sequence is as follows   S = {...-5,-3,-1,1,3,5...}   By observing the above two sequences we can say that 3 must be there in set S.   III onlynswer : III only
<result>A</result>
A set of numbers has the property that for any number t in the set,t+2 is in the set. If -3 is in the set, which of the following must also be in the set? I. 4 II. 6 III. 3