Final answer:
Chinese chess is played between two players. The rice on a chess board problem illustrates exponential growth, with the total number of grains equaling 2 to the power of 64 minus one.
Step-by-step explanation:
A game of Chinese chess, also known as Xiangqi, involves two players. So the correct answer to the question is A. 2.
Regarding the classic story about grains of rice and a chess board, this is a well-known illustration of exponential growth. Starting with a single grain on the first square and doubling on each subsequent square, the total number of grains on the chess board would be one less than 264 which is a huge number. The calculation goes as follows:
20 + 21 + 22 + 23 + ... + 263 = 264 - 1
The sum equals 18,446,744,073,709,551,615 grains of rice, showing how an initially small number can grow immensely in the context of exponential growth.