Each person, in an it department of 60 people, works on at least one of 3 major projects: system security, program implementation, platform development. 23 people work on system security, 28 work on program implementation, and 26 work on platform development. 7 people work on system security and platform development, 12 people work on program implementation and platform development, and 6 people work on all three projects. how many people work only on system security and program implementation (i. e., not all three projects)?
answer either: 4, 5 or 6

4

Step-by-step explanation:

Given: total persons in IT department=60,23 people work on system security, 28 work on program implementation, and 26 work on platform development. 7 people work on system security and platform development, 12 people work on program implementation and platform development, and 6 people work on all three projects.

To Find: number of people working only on system security and program implementation.

Solution:

let people in system security be=,

let people in  program implementation be=,  

let people in platform development be=,

persons working in and = ∩, ∩=

persons working in and = ∩, ∩=

persons working in and = ∩=

persons working in , and =∩∩, ∩∩=6

Now,

we know that

∪∪= ++-∩-∩-∩+∩∩

on putting values,

60=23+28+26-7-12-∩+6

∩=64-60

∩=4

hence, the number of persons working in system security and program implementation are=4

drive more conversions to your website

conversions are the outcome of your efforts. when a visitor sign up for any newspaper, or fill any form to order a specific product or when your page is shared on social media, all such attempts mean conversions of a website. whenever your desired action is fulfilled, the conversion rate of your website will increase. this increase in your conversion rate will prove that your website is   going well. it also confirms that the quality of your website’s marketing was really good.drive more conversion to your website       drive more conversions to your website

step-by-step explanation:

1e+27

step-by-step explanation: