sets having only critical defects 2%,sets having only major defects 5%,sets having only minor defects 7%, sets having critical and major defects 3%, sets having only critical and major defects 4% , sets having only major and minor defects 3%, sets having all three types of defects 1%. what fraction of the sets has no defects ? sets with either critical or major defects(or both) get a complete rework. what fraction falls in this category?