(c) let * be a new operator on sets is defined as follows: given two sets a
and b, a*b= (an b)’

i. draw a venn diagram for a* b

ii. by using the laws of the algebra of sets show that the following is true:
• (a* a) +(b+ b) = aub
• (a+b) + (a + b) = anb

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?

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%

The collection of beautiful oil paintings currently on display at an art gallery well defined; set not well defined; not a set