5. A jury of 12 people is chosen for a trial. The defense attorney claims it must have been chosen in a biased manner because 50% of the city’s adult residents are female, yet the jury contains no women. If the jury were randomly chosen from the population, what is the probability that the jury would have i) no females, ii) at least 1 female

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.