In the pipe flange shown to the right, the ten bolt holes are equally spaced. What is the spacing of the holes, in degrees?
1 answer:
The Solution:
The total degree of the pipe flange is 360 degrees.
It is given that the pipe flange has 10 bolt holes that are equally spaced.
This means that the spacing between the 10 bolt holes can be calculated as below:
Thus, the spacing of the bolt holes (in degrees) is 36 degrees.
Therefore, the correct answer is 36 degrees.
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Given:
Number of girls = 10
Number of boys = 15
To find:
The probability that the first, second and third place winners will be boys.
Solution:
Total number of boys and girls:
The probability that the first place winner will be a boy is
Now, the remaining number of boys is 14. So, the probability that the first place winner will be a boy is
Now, the remaining number of boys is 13. So, the probability that the first place winner will be a boy is
The probability that the first, second and third place winners will be boys is
Therefore, the probability that the first, second and third place winners will be boys is .