Grade ix, Class 9th SSc part-1 Mathematics Notes, Chapter #2 Real, and Complex Numbers, SQs, LQs, Short Notes, for all kpk Boards, Abbottabad, Bannu, Dera Ismail Khan, Kohat, Malakand, Mansehra District, Haripur District, Upper Kohistan District, Lower Kohistan District, Torghar District, Battagram District Mardan, and Peshawar Boards.
Chapter 2 Real and Complex Numbers SSc 9th Class kpk Mathematics Notes
Set of Natural Numbers
𝑁 = {1, 2, 3, 4, … }
Set of Whole Numbers
𝑊 = {0, 1, 2, 3, 4, … }
Set of Integers
𝑍 = {0, ±1, ±2, ±3, … }
OR
𝑍 = {…, −3, −2, −1, 0, 1, 2, 3}
