如图所示,在两个圆盘中,指针在本圆盘每个数所在区域的机会均等,那么两个指针同时落在奇数所在区域的概率是( )
A:49
B:29
C:23
D:13
因式分解: 25a2-10a+1=____.
看图读一读,连线。
① ____ A. Do you like ice cream? - Yes, I like ice cream.
② ____ B. Taste the noodles, Tom. Yummy.
③ ____ C. What do you hear? I hear a cat.
④ ____ D. What do you see? I see a bird. It's yellow.
实验学校九年级一班十名同学定点投篮测试,每人投篮六次,投中的次数统计如下:5,4,3,5,5,2,5,3,4,1,则这组数据的中位数,众数分别为