Answer:
So the idea is that we want to find the total number of ways that we can pick 7 diamonds (real or fake) from the 12 diamonds.
So as you said, 12 choose 7 = 792
Now we need the total number of ways that we can satisfy that of the 7 we picked, exactly three are real, but this also means that four are fake.
So to choose 3 real from 5 is 5 choose 3 = 10
And to choose 4 fake from 7 is 7 choose 4 = 35
3x10/792= 350/792= 175/396
Answer:
4%
Step-by-step explanation:
370.00x4%=$14.80
Answer:
$400
Step-by-step explanation:
150 + 300 = 450
450 - 50 = 400
Answer:
The side length of the cube is 5 cm. Then the volume is simply 5\times 5\times5 = 125
LxWxH
