Amanda selected 18 pea pods at random from a bag containing about 500 pea pods. she opened each pod and counted the number of peas in the pod.
what is the estimated mode of the number of peas to be found in all the pea pods?
8
8.5
9
10

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?