4Pr = 4*5Pr-1. Find r. – McqOptions

MCQOPTIONS

1.	4Pr = 4*5Pr-1. Find r.
A.	1
B.	2
C.	3
D.	4
Answer» B. 2

Discussion

No Comment Found

Related MCQs

Find the number of words which can be made using all the letters of the word IMAGE. If these words are written as in a dictionary, what will be the rank of MAGIE?
In how many ways 2 red pens, 3 blue pens and 4 black pens can be arranged if same color pens are indistinguishable?
Find the number of different 8-letter arrangements that can be made from the letters of the word EDUCATION so that all vowels do not occur together.
Find the number of different 8-letter arrangements that can be made from the letters of the word EDUCATION so that all vowels occur together.
4Pr = 4*5Pr-1. Find r.
If nP3 = 4*nP2. Find n.
How many 3-digit numbers are possible using permutations with repetition allowed if digits are 1-9?
How many 3-digit numbers are possible using permutations without repetition of digits if digits are 1-9?
Find the number of 4 letter words which can be formed from word IMAGE if repetition is allowed.
Find the number of 4 letter words which can be formed from word IMAGE using permutations without repetition.