Question

Please Help Me i am stuck on this one...
You have checked out b books from the library, where b is a number greater than 5. You plan to read three of the books and return them at the end of this week. In how many ways can you pick the books you will read first, second and third?
A. b^3 ways B. b^3-3b^2 +2b ways C. b^3-9b^2+ 27b-27 ways D. 5b-3 ways

Answer 1

THis question is weird. D:

Answer 2

i know

Answer 3

im not sure. sorry.

Answer 4

b*(b-1)*(b-2)

b choices for first book, b-1 choices for second, b-2 choices for third. am i missing something?

Answer 5

it's definitely not D.

Answer 6

its ok .. thx anyways for tryn to help me :D

Answer 7

Why you took b -1 and b-2?

Answer 8

well b for the 1st book so b-1 and b-2 for the second book right?? i have no idea what i am doing to be honest lol

Answer 9

im not sure too,
but i think it will be,

b(b+1)(b+2)

Answer 10

i have no idea ill guess on this one :) and put in the answer after i fail it so at least someone else might be able to score it right :P

Answer 11

Wait. i think you were correct.

Answer 12

Go with B.

Answer 13

B it is :)

Answer 14

You were correct i just figured.

Answer 15

it was B ur the best thx :)

Answer 16

Np