maddia13 maddia13
  • 02-09-2021
  • Mathematics
contestada

Given n(J) = 285, n(K) = 197 and n(J ∪ K) = 431, find n(J ∩ K).

Respuesta :

LammettHash
LammettHash LammettHash
  • 02-09-2021

By the inclusion/exclusion principle,

n(J ∩ K) = n(J) + n(K) - n(J U K)

n(J ∩ K) = 285 + 197 - 431

n(J ∩ K) = 51

Answer Link

Otras preguntas

What's the other term for: lacking respect; scornful
If X is the set of negative numbers and Y is the set of positive numbers, then the union of X and Y and 0 is the set of (A) all real numbers (B) all integers (C
What is the answer to 12-2x6+2/2
What's the term for: unwilling to bend; unyielding
What is the highest mountain on each continent?
What's the term for: unwilling to bend; unyielding
A solution of hydrogen peroxide, H2O2, is titrated with potassium permanganate, KMnO4, according to the following equation: 5H2O2 + 2KMnO4 + 3H2SO4 = 5O2 + 2MnS
I figured out the 1st question but I do not understand the second one...please show me step by step! Thank you!
What is the highest mountain on each continent?
what is 12minus 2 multiply 6 plus 2 divide by 2