সব প্রশ্নে ফিরে যান
Math
In a certain country a person is born every 7 seconds and a person dies every 13 seconds. Therefore, the birth and death rates account of a population growth rate of one person every-0
A) 4.5 seconds
B) 6 seconds
C) 15.17 seconds
সঠিক উত্তর
D) 20 seconds