Permutation and CombinationHard
Question
nPr is equal to -
Options
A.n.nPr-1
B.n.n-1Pr-1
C.(n - 1).nPr-1
D.None of these
More Permutation and Combination Questions
Sameer has to make a telephone call to his friend Harish, Unfortunately he does not remember the 7 digit phone number. B...The number of numbers can be formed by taking any 2 digits from digits 6,7,8,9 and 3 digits from 1,2,3,4,5 is -...The number of ways in which six different prizes can be distributed among three children each receiving at least one pri...Number of ways in which 3 numbers in A.P. can be selected from 1, 2, 3,...... n is:...nPn is equal to-...