Question

Із 100 іноземних туристів 75 знали німецьку мову і 83 фрацузьку. Скільки туристів знали французьку і німецьку мову одночасно?

Answer 1

1/ 75+83=158 людей знали мови разом взят!               2/158-100=58 турист!в знали одночасно французьку ! н!мецьку мову одночасно                                                            

Answer 2

Calculating the Number of Tourists Who Knew Both German and French

To calculate the number of tourists who knew both German and French, we can use the principle of inclusion-exclusion.

Let's denote: - A as the number of tourists who knew German, - B as the number of tourists who knew French, - n as the total number of tourists.

According to the given information: - A = 75 (number of tourists who knew German) - B = 83 (number of tourists who knew French) - n = 100 (total number of tourists)

We can use the formula: A ∪ B = A + B - A ∩ B

Where: - A ∪ B represents the total number of tourists who knew either German or French, - A ∩ B represents the number of tourists who knew both German and French.

Substituting the given values: A ∪ B = 75 + 83 - A ∩ B 100 = 75 + 83 - A ∩ B A ∩ B = 75 + 83 - 100 A ∩ B = 58

Therefore, 58 tourists knew both French and German simultaneously.