Two dice are rolled together. What is the probability of getting an odd number as sum ?

Two dice are rolled together. What is the probability of getting a total of atleast 11 ?

Find the probability that a leap year will have 53 Tuesdays.

Numbers 1 to 10 written on ten separate identical slips (one number on one slip) are kept in box and mixed well. One slip is chosen at random from the box without looking into it. What is the probability of :

(i) getting a number less than 6 ?

(ii) getting a single digit number ?