Given numbers of 1,2,5,7,8. a person is allowed to pick 3 numbers at once. can anyone tell me what is the probability of getting an even number with the 3 picked numbers ?

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Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?