How many ways can a set of 10 different books be arranged on a shelf if they are not in alphabetical order? 10! 9! – 1 9! 10! – 1

Q: Find 1!, 2!, 4!, and 6!.

A: Factorial:

Q: how many ways can Dr. Yes invite 8 of his friends if he has to invite at most 4 at a time?

A:

Q: How many different ways can six different objects be arranged i

A: Factorial: n!=n*(n-1)*(n-2)*.....*2*1 Given that there are 6 different objects. That is, n=6

Q: How many 3 digit numbers may be formed from the digits 0,1,2,3,4, & 5 if no digit maybe repeated?

A: The given number are 0,1,2,3,4,5.

Q: how many ways can four doctors and three nurses be seated in a row if the doctors and nurses are to…

A: Given that :  D represent doctors .  N represents nurses.  Arrangement in which Doctors and Nurses…

Q: How many elements are in the set {2,2,2,2}

A: We have to find number of elements

Q: How many different ways can a visiting nurse visit  9  patients if she wants to visit them all in…

A: number of patients n=9   Different number of ways that n different items can be arranged is n!…

Q: How many ways can you arrange the letters from the word TEACHER?  How many ways can you arrange the…

A: NOTE- I HAVE CALCULATED ALL THE PARTS

Q: How many four-digit numbers can be formed from the numbers 1, 3, 4, 6, 8, and 9 if repetition of…

A:

Q: How many ways can four of the letters of the word MAILBOX be selected and written in a row if the…

A: