FIG. 1 is a front perspective view of the ornamental design for knife and scissors sharpener of the invention;
FIG. 2 is a front elevational view of the ornamental design for knife and scissors sharpener of FIG. 1;
FIG. 3 is a right end elevational view, viewing FIG. 1, of the ornamental design for knife and scissors sharpener of FIG. 1;
FIG. 4 is a left end elevational view, viewing FIG. 1, of the ornamental design for knife and scissors sharpener of FIG. 1;
FIG. 5 is a rear elevational view, of the ornamental design for knife and scissors sharpener of FIG. 1;
FIG. 6 is a top plan view of the ornamental design for knife and scissors sharpener of FIG. 1; and,
FIG. 7 is a bottom plan view of the ornamental design for knife and scissors sharpener of FIG. 1.