Question

A number is selected at random from the set {2, 3, 4,10}. Which event, by definition, covers the entire sample space of this experiment?
The number is greater than 2.
The number is not divisible by 5.
The number is even or less than 12.
The number is neuther prime nor composite.
The square root of the number is less than 3.
Is it the first only? Thats the only one I can think of.

Answer 1

the number of  even  or  less than 12.

         the numbers 2, 4, 10  are  even
         the number 3  is not even but is less than 12
  so  even or less than 12 -- describes the set....

   this above description is most suitable of the options given.. But it is not the most accurate definition....of the given set.