An integer is chosen form 1 to 100. Find the probability that:
integer chosen is composite.

An integer is chosen form 1 to 100. Find the probability that: integer chosen is a prime number.

An integer is chosen form 1 to 100. Find the probability that: a multiple of 11.

An integer is chosen from the first 200 integers. Find the probability that it is divisible by 6 or 8.

A bag contains 100 bolts and 300 nuts, 50% of each have been rusted. One item is chosen at random. Find the probability that chosen item is rusted or a bolt.

A bag contains 5 red, 8 black and 7 white balls. One ball is chosen at random. What is the probability that the chosen ball is back?

An Organisation selected 2400 families at random and surveyed them to determine a relationship between income level and the number of vehiclesin a family. The information gathered is listed in the table below : Suppose a family is chosen. Find the probability that the family chosen is : not more than 1 vehicle.

A positive integer N is selected so as to be 100ltNlt200. Then, the probability that it is divisible by 4 or 7, is

Out of 3n consecutive integers, there are selected at random. Find the probability that their sum is divisible by 3.

A drawer contains 50 bolts and 150 nuts. Half bolts and half of the nuts are rusted. If one item is chosen at random what is the probability that it is rusted or is a bolt.