State whether the “Or” used in the following ...

NCERT Class XI Mathematics - Mathematical Reasoning - Solutions

Question : 9 of 25

Marks: +1, -0

State whether the “Or” used in the following statements is “exclusive” or “inclusive”. Give reasons for your answer.

(i) Sun rises or Moon sets.

(ii) To apply for a driving licence, you should have a ration card or a passport.

(iii) All integers are positive or negative.

Solution:

(i) This statement makes use of exclusive “or”. Since when sun rises, moon does not set during day-time.

(ii) This statement makes use of inclusive ‘or’. Since you can apply for a driving licence even if you have a ration card as well as a passport.

(iii) This statement makes use of exclusive ‘or’. Since an integer is either positive or negative, it cannot be both.

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