... a ch tham chin mun thc hi Trong Excel 2010, b n 254 ref (vi Excel 2003 tr v 29) Bao g ... li ta khi nh p k t n Excel 2003 vi s chi s th nht cn ... = SUMPRODUCT(array1, array2, ) 2 ti 255 mng (vi Excel 2003 tr v c vi nhau...