A decimal numeral from (0,1,2,3,4,5,6,7,8,9) is selected at random. Find the chance it is a prime number.

From a set of 17 cards, numbered 1, 2, 3, 4, .... ,16, 17, one is drawn at random. Show that the chance that its number is divisible by 3 or 7 is 7/17 .

Out of (2n+1) tickets consecutively numbered, three are drawn at random. Find the chance that the numbers on them are in AP.

let U= {1,2,3,4,5,6,7,8} A = {1,2,,3,4} then find the A complement

The digits 1, 2, 3, 4, 5, 6, 7, 8, and 9 are written in random order to form a nine digit number.Let p be the probability that this number is divisible by 36, find 9p.

A game of chance consists of spining an arrow which comes to rest pointing at one of the numbers 1,2,3,4,5,6,7,8, and these are equally likely outocomes. What is the probability that it will point at (i) 8 ? (ii) an odd number ? (iii) a number greater than 2 ? (iv) a number less than 9 ?

Let A = {1,2, 3,4, 5, 6, 7, 8, 9, 10} and B = {2, 3,5, 7}. Find A nn B and prove that A nn B=B .

Organise the following marks in a class assessment, in a tabular form. 4, 6, 7, 5, 3, 5, 4, 5, 2, 6, 2, 5, 1, 9, 6, 5, 8, 4, 6, 7 Find the arithmetic mean.

Find 8-3,6-2,9-6 using the number line.

If A= {1,2,3,4,5,6,7} and B= {7,8,9,10}, then A-B equals :