People do not analyse every problem they meet. Sometimes they try to remember a solution from the last time they had a 1 problem. They often accept the opinion or ideas of other people. Other times th
You may know your mother, but how well do you really know Mother’s Day? Cards, flowers, sales, TV specials, and a day off for someone who really deserves it —those are what probably co
×π×1222 cm2的大圆内，而当中靶点落在面积为
×π×12.22 cm2的黄心内时，事件B发生，于是事件B发生的概率为P(B)=
=0.01，即射中黄心的概率为0.01.