You have two boxes of colored pens. The first box contains a red pen, a blue pen, and green pen. The second box contains a yellow pen, a red pen, and a black pen. What is the set that represents all the pens?
A. {red pen, blue pen, green pen}

B. {red pen}

C. {red pen, red pen, green pen, yellow pen, black pen}

D. {red pen, blue pen, green pen, yellow pen, black pen}

Question

You have two boxes of colored pens. The first box contains a red pen, a blue pen, and green pen. The second box contains a yellow pen, a red pen, and a black pen. What is the set that represents all the pens? 
 A. {red pen, blue pen, green pen}  
 
 B. {red pen}  
 
 C. {red pen, red pen, green pen, yellow pen, black pen}  
 
 D. {red pen, blue pen, green pen, yellow pen, black pen}

anonymous · Answer

this is connections academy

anonymous · Answer

think it through

anonymous · Answer

it says which represents all the pens, so it would be all the colors.. correct?

anonymous · Answer

its D. {red pen, blue pen, green pen, yellow pen, black pen}. it represents all the pens. and a set does not repeat.

anonymous · Answer

so it couldnt be C. which does repeat. and B and A do not represent all of the pens. :)

anonymous · Answer

don't just give he answer, try to help her figure it out