From 1980 to 1990, the value of stock of PQR Corporation doubled every year. In 1990 a Share of the worth Tk. 80, in what year was it worth Tk.10?

Question

From 1980 to 1990, the value of stock of PQR  Corporation doubled every year. In 1990 a  Share of the worth Tk. 80, in what year was it   worth Tk.10?

Accepted Answer

সঠিক উত্তর: 1987। ব্যাখ্যা: