1.Iftheproductof412.7&100isroundedtothenearesthundred,theanswerwillbe:a.400b.4,100c.4,172d.41270e.413002.Anartgalleryhasthreecollections:modernart,scupture,andphotography.Ifthe24itemswhichmakeupthemodernartcollect

　　1.Iftheproductof412.7&100isroundedtothenearesthundred,theanswerwillbe:a.400b.4,100c.4,172d.41270e.41300

　　2.Anartgalleryhasthreecollections:modernart,scupture,andphotography.Ifthe24itemswhichmakeupthemodernartcollectionrepresent25%ofthetotalnumberofitemsinthegallery,thentheaveragenumberofitemsineachcollectionis:

　　a.8b.24c.32d.96e.288