Question

Object A is postiively charged. Object A and Object B attract. Object B and Object C attract. Object C and Object D repel. What type of charge does Object B, Object C, and Object D possess?

Answer 1

Objects with opposite chargers will attract each other, and objects with the same chargers will repel.  Therefore:

If A is positive, B is negative (they attract)

If B is negative, C is positive (they attract)

If C is positive, D is positive (they repel)!

Hope this helps!!