Complete:

To find the number of possible arrangements of dissimilar things, we use ________.

Is the sentence true or false?

$P(n,r)=r!C(n,r)$

  Complete:

For grouping of things, or to get a count of the number of subgroups that can be obtained from the given set of things we use_____________.

Is the sentence true or false?

Combination of two things from three given things a, b, c is ab, bc, ca.

Complete:

When the order does matter, it is a ________.

A flag has to be made by stitching three ribbons of different colors. There are a total of 5 ribbons of different colors. Find the number ways in which a flag can be made using these ribbons.

Is the sentence true or false?

$\frac{P(n,r)}{C(n,r)}=r!$

Is the sentence true or false?

Permutation of two things from three given things a, b, c is ab, ba, bc, cb, ac, ca.

 John wants to invite about 5 guests from among his friends, for a party at his home. Which of the following would help to find different set of friends, whom John can invite for the party at his home

Is the sentence true or false?

A Permutation is an ordered Combination.