1. From 2007 to now, there have been six times in this month, namely, June 2008, February 2009, 201,201,206538/kloc-. Among them, there were three times in February that the question bank was not changed, accounting for half of the total. It can be seen that the probability of not changing the question bank in February is still quite large. If the database is not changed in the current month, it can be predicted that the time to change the database in the next month will be the beginning of next month (half is 1, 2, 3 days), and the item bank will not be changed in the current month, with the longest interval of 39 days and the shortest interval of 30 days.
2. Since 2007, there have been six warehouse changes in the same month, namely, 2009 1 month, 201February, 201July and 201February. The probability of two exchanges is concentrated at the end of the year and the beginning of the year.
3. The longest interval between changing question banks is 39 days, from May 23rd, 2008 to July 3rd, 2008. The shortest interval for changing question banks is 9 days, from July 4th, 20 16 to July 3rd, 20 16.
4. Among them, Thursday and Friday are the weeks with the most times to change the question bank, and Saturday and Sunday are the weeks with the least times to change the question bank.
The above rules can be used to refer to the time of changing positions, but in GMAC's mind, don't guess at will, you will get hurt.
The most important thing is to master the problem-solving thinking and answering skills, and cultivate the relevant logical thinking ability and business thinking is the best way to deal with the GMAT exam, so that you are not afraid to change libraries anyway!