What's the difference between Volume A and Volume B of the National Senior High School Mathematics League? In which province are Volume A and Volume B used respectively? Please answer in detail!
Inner Mongolia, Ningxia, Xinjiang, and Guangxi took the B exam, and other provinces took the A exam. The contents of the two volumes are similar, but the initial thinking of volume A is relatively large, and the thinking of volume B is relatively small, but the amount of calculation is relatively large. The scope of the additional test is the same, all of which are college knowledge, but is volume A greater than volume B? Generally speaking, Volume A is much more difficult than Volume B. ..