Tutor profile: Radhika R.
In a group of 40 people, 10 are healthy and every person of the remaining 30 has either high blood pressure, a high level of cholesterol or both. If 15 have high blood pressure and 25 have high level of cholesterol, a) how many people have high blood pressure and a high level of cholesterol?
Evaluate f(10)-f(5)+f(2), where f(x) = 3, for all x
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