Two – dimensional array is the simplest form of a multidimensional array. Similarly array int x can store total (5*10*20) = 1000 elements. The array int x can store total (10*20) = 200 elements. The total number of elements that can be stored in a multidimensional array can be calculated by multiplying the size of all the dimensions. ISRO CS Syllabus for Scientist/Engineer Exam.ISRO CS Original Papers and Official Keys.GATE CS Original Papers and Official Keys.