What is a Pronic Number ?
A number which is the product of two consecutive numbers is a Pronic Number. Consecutive means the numbers which come one after other when counted in ascending order such as 2,3; 5,6; 98,99 and so on. Thus, a product of any two consecutive numbers is a Pronic number. Example, 12 is a product of 3 and 4 (consecutive numbers), thus it is a Pronic number. Other examples of Pronic numbers are 20 (product of 4 and 5), 42 (product of 6 and 7), 72 (product of 8 and 9) and so on.