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How many edges corners and faces does a cylinder have?
2 edges (curved), 0 corners, and 3 faces (one of which is not flat) ------------------------------------------------------------------------------------------------- A cylinder has 0 vertices (corners), 0 edges, and 2 faces. If you need convincing, my proof is Euler's formula, which which relates all three and is true for all solids in Euclidean 3-space: V + F - E = 2 0 + 2 - 0 = 2 You cannot consider the curved boundaries when counting faces or edges.
How many faces does a parallelogram have?
A parallelogram is a 2-dimensional object and so has only one face.
What is the median of 0 0 0 0 0 2 0 1?
The median of 00000201 is 0 The way to figure is out is: 1. put them into ascending order (lowest to highest) 2. cross off the each end number like this : 0 0 0 0 0 0 1 2 3. keep going : 0 0 0 0 0 0 1 2 4. if there is one number left in the middle, that's the answer, but if there's two, you divide them: so in this case, is: 0 / 0
What is the probability of getting 2 girls and 2 boys of 4 children?
It depends. If the order is important, (2 girls then 2 boys): There's a 1/2 chance of any sex, so the probability is 1/16(or 6.25%). But if it's just any order of 2 girls and 2 boys, then it's a different outcome. Consider the following table. The desired outcome is 2 girls, 2 boys in any order. We can just look for 2 girls, and convert to Boolean values of 1 for girl and 0 for boy. Here is the table:0 0 0 0: 00 0 0 1: 10 0 1 0: 10 0 1 1: 2*0 1 0 0: 10 1 0 1: 2*0 1 1 0: 2*0 1 1 1: 31 0 0 0: 11 0 0 1: 2*1 0 1 0: 2*1 0 1 1: 31 1 0 0: 2*1 1 0 1: 31 1 1 0: 31 1 1 1: 4Note each row has five numbers. The first four numbers represent the four children, and the fifth number is a sum of these four numbers. Any time the sum equals exactly 2, then the desired outcome (2 out of the four children are girls).This happens 6 times out of the 16 total possible outcomes, so the probability is 6/16, or 3/8 = 37.5%
What is the variance of these four scores 0 1 1 2?
Variance = sigma((value - mean)2) / (# values - 1) Mean = (0+1+1+2)/4 = 1 Variance = ((0-1)2+(1-1)2+(1-1)2+(2-1)2)/(4-1) Variance = (1+0+0+1)/3 Variance = 2/3 Variance ~ 0.667
