Correct use of 'At' in English | English Speaking Practice with Awal #shorts

In a Nigerian hotel, among the english speaking people 40% are English & 60% Americans. The English & American spellings are "RIGOUR" & "RIGOR" respectively. An English speaking person in the hotel writes this word. A letter from this word is chosen at random & found to be a vowel. Find the probability that the writer is an Englishman.

These questions are based on the following diagram : The triangle stands for Hindi-speaking people, circle for French-speaking, square for English-speaking and rectangle for German-speaking people. In the above diagram, which one of the following statements is true ?

These questions are based on the following diagram : The triangle stands for Hindi-speaking people, circle for French-speaking, square for English-speaking and rectangle for German-speaking people. In the diagram, which one of the following statements is true?

These questions are based on the following diagram : The triangle stands for Hindi-speaking people, circle for French-speaking, square for English-speaking and rectangle for German-speaking people. In the above diagram, which one of the following statements is not true ?