袋子 糖果 | 红色 | 黄色 | 绿色 | 总计 |
甲袋 | 2颗 | 2颗 | 1颗 | 5颗 |
乙袋 | 4颗 | 2颗 | 4颗 | 10颗 |
若小明从甲、乙两个袋子中各随机摸出一颗糖果,则他从甲袋比从乙袋( )
A.摸出红色糖果的概率大 | B.摸出红色糖果的概率小 |
C.摸出黄色糖果的概率大 | D.摸出黄色糖果的概率小 |
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2