Advertisements
Advertisements
प्रश्न
Choose the correct alternative:
The product of r consecutive positive integers is divisible b
पर्याय
r!
(r – 1)!
( r + 1 )!
rr
Advertisements
उत्तर
r!
APPEARS IN
संबंधित प्रश्न
Is 3! + 4! = 7!?
Evaluate `(n!)/((n-r)!)` when n = 6, r = 2
In how many of the distinct permutations of the letters in MISSISSIPPI do the four I’s not come together?
Which of the following are true:
(2 +3)! = 2! + 3!
If three six faced die each marked with numbers 1 to 6 on six faces, are thrown find the total number of possible outcomes ?
How many numbers of four digits can be formed with the digits 1, 2, 3, 4, 5 if the digits can be repeated in the same number?
Find the number of ways in which one can post 5 letters in 7 letter boxes ?
The number of words that can be formed out of the letters of the word "ARTICLE" so that vowels occupy even places is
If in a group of n distinct objects, the number of arrangements of 4 objects is 12 times the number of arrangements of 2 objects, then the number of objects is
The number of ways in which the letters of the word ARTICLE can be arranged so that even places are always occupied by consonants is
In how many ways 5 boys and 3 girls can be seated in a row, so that no two girls are together?
The greatest positive integer which divide n(n + 1) (n + 2) (n + 3) for all n ∈ N is:
8 women and 6 men are standing in a line. In how many arrangements will all 6 men be standing next to one another?
In how many ways 4 mathematics books, 3 physics books, 2 chemistry books and 1 biology book can be arranged on a shelf so that all books of the same subjects are together
A coin is tossed 8 times, how many different sequences containing six heads and two tails are possible?
Choose the correct alternative:
If Pr stands for rPr then the sum of the series 1 + P1 + 2P2 + 3P3 + · · · + nPn is
In how many ways can 5 children be arranged in a line such that two particular children of them are never together.
Find the number of permutations of n different things taken r at a time such that two specific things occur together.
Number of words from the letters of the words BHARAT in which B and H will never come together is ______.
