In a committee, 50 people speak French, 20 speak Spanish and 10 speak both Spanish and French. How many speak at least one of these two languages?

Let H be the set of people who speak Hindi, and E be the set of people who speak English  ∴ n(H ∪ E) = 400, n(H) = 250, n(E) =...

Let C denote the set of people who like coffee, and T denote the set of people who like tea  n(C ∪ T) = 70, n(C) = 37, n(T) = 52  We...

Let C denote the set of people who like cricket, and T denote the set of people who like tennis  ∴ n(C ∪ T) = 65, n(C) = 40, n(C ∩...

The French revolutionaries introduced various measures and practices that created a sense of collective identity amongst the French people (i) The ideas of la Patrie (the fatherland) and le citoyen (the...

(i) The ideas of La Patrie (the fatherland) and Le Citoyen (the citizen) emphasized the notion of united community enjoying equal rights under a constitution. (ii) A new French flag, tricolor...

The French revolutionaries took many important steps to create a sense of collective identity among the French people. Ideas of la patrie (the fatherland) and le citoyen (the citizen) popularised...

Let H be the set of people who speak Hindi, and E be the set of people who speak English ∴ n(H ∪ E) = 400, n(H) = 250, n(E) =...

Let C denote the set of people who like coffee, and T denote the set of people who like tea n(C ∪ T) = 70, n(C) = 37, n(T) = 52...

Let C denote the set of people who like cricket, and T denote the set of people who like tennis ∴ n(C ∪ T) = 65, n(C) = 40, n(C ∩...

Let F be the set of people in the committee who speak French, and S be the set of people in the committee who speak Spanish ∴ n(F) = 50, n(S) =...