Getting a number less than 7 while rolling a dice is not a sure event.
False
Since all the numbers marked on the faces of a dice is less than 7, the number of favourable outcomes in the given case is 6.
So, P(getting a number less than 7) is
=number of favourable outcomestotal number of outcomes
= 66
= 1
An event whose probability is 1, is called a sure event and hence getting a number less than 7 while rolling a dice is a sure event.