Chapter 9 Exercise 9.2 Intro + Example 4,5,6,7,8

Five numbers are selected from 1, 2, 3, 4, 5, 6, 7, 8 and 9. The probability that their product is divisible by 5 or 7 is

If the sets A and B are given by A = {1, 2, 3, 4} B = {2, 4, 6, 8, 10} and the universal set U = {1,2,3,4,5,6,7,8,9,10} then

Without expanding proof that |[1,2,3],[4,5,6],[7,8,9]| =0

The median for the following frequency distribution is : {:(x_(i) " :",1,2,3,4,5,6,7,8,9),(f_(i)" :",8,10,11,16,20,25,15,9,6):}

The number of seven digit numbers divisible by 9 formed with the digits ,1,2,3,4,5,6,7,8,9 without repetition is (A) 7! (B) ^9P_7 (C) 3(7!) (D) 4(7!)

The number of seven digit numbers divisible by 9 formed with the digits ,1,2,3,4,5,6,7,8,9 without repetition is (A) 7! (B) ^9P_7 (C) 3(7!) (D) 4(7!)

The average value of the median of 2,8,3,7,4,6,7 and the mode of 2,9,3,4,9,6,9 is

A square is inscribed in the circle x^2+y^2-2x+4y-93=0 with its sides parallel to the coordinate axes. The coordinates of its vertices are (-6,-9),(-6,5),(8,-9),(8,5) (-6,-9),(-6,-5),(8,-9),(8,5) (-6,-9),(-6,5),(8,9),(8,5) (-6,-9),(-6,5),(8,-9),(8,-5)

Let U= { 1,2,3,4,5,6,7,8,9,10 } be the universal set and let A = {2,3,4,5,6} and B = { 3,5,7,8} be its subsets . Find A'

Find the number of zeros at the end in product 5^6 .6^7 .7^8 .8^9 .9^(10) .30^(31) .