There is an 8-liter jar full of wine, another 3-liter jar and an empty 5-liter jar. How can I divide wine into two 4-liter jars? Up to seven times. In brackets are the states of containers 8, 5 and 3: 8->; 5(3 5 0), 5->3(3 2 3), 3->8(6 2 0), 5->3(6 0 2), 8->5( 1 5 2), 5->3( 1 4 3), 3- /kloc-how many cats does it take to catch 0/00 minutes 100 mice? /kloc-how many times can you subtract 3 from 0/8? The post office has changed its phone number countless times. However, this new phone number is very good. There are three characteristics that make the new phone number easy to remember: first, both the original number and the new number are four digits; Secondly, the new number is exactly four times the original number; Third, the original number is written backwards from the back, which happens to be a new number. What is the new number? 87 12 17 Please think about the rules and do mental arithmetic quickly)1+2+3+...+198+199+200 =? (1+200)*200/2 has seven numbers: 1, 2, 3, 4, 5, 6, 7. How many plus signs can make their sum equal to 100? 1+2+34+56+7