Question

Suppose we want to choose 2 objects, without replacement, from the 4 objects pencil, eraser, desk, and chair. (a) How many ways can this be done, if the order of the choices matters? (b) How many ways can this be done, if the order of the choices does not matter?

          Suppose we want to choose 2 objects, without replacement, from the 4 objects pencil, eraser, desk, and chair.
(a) How many ways can this be done, if the order of the choices matters?
(b) How many ways can this be done, if the order of the choices does not matter?

Suppose we want to choose 2 objects, without replacement, from the 4 objects pencil, eraser, desk, and chair.
(a) How many ways can this be done, if the order of the choices matters?
(b) How many ways can this be done, if the order of the choices does not matter?

Added by Ryan G.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Victor Salazar

05/20/2022

Step 1

We have 4 objects to choose from, and we want to choose ? objects. The number of ways to do this is given by the formula: nPr = n! / (n-r)! where n is the total number of objects and r is the number of objects we want to choose. In this case, we have 4 objects Show more…

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Suppose we want to choose ? objects, without replacement; from the 4 objects pencil, eraser; desk; and chair (a) How many ways can this be done, if the order of the choices matters? ((0) How many ways can this be done: If the order of the choices does not matter?