Recent questions and answers in Combinatory

0 votes

0 answers

Binary String with 5 0's and 6 1's possible, where all 0's are together.

asked 12 hours ago in Combinatory by Abhinav993 (173 points) | 6 views

0 votes

0 answers

jee practice ques permutation
There are 5 apples 10 mangoes and 15 oranges in a basket. Then find number of ways of distributing 15 fruits each to 2 persons. a)56 b)64 c)66 d)72

asked Aug 13 in Combinatory by Shubhm (132 points) | 3 views

0 votes

1 answer

Self Doubt: Combinatorics
In how many ways a garland maker can stitch the flowers to make a garland with 4 red roses(distinct) and 10 white roses(distinct) so that no 2 red roses come together. My doubt is should we take (n-1)!/2 * 10P4 or (n-1)! * 10P4? As it is a case of non-living object y should we make distinction between clockwise and anticlockwise? (n-1)!/2 is more apt right?

answered Aug 10 in Combinatory by Satbir (1k points) | 47 views

0 votes

0 answers

Combinatorics
What is the logic to solve this?

asked Aug 9 in Combinatory by Jean (102 points) | 13 views

0 votes

1 answer

A person shops for 10 chocolates of 3 different types. How many selections of chocolates can he make?

answered Aug 8 in Combinatory by Satbir (1k points) | 39 views

+1 vote

1 answer

MadeEasy Workbook
in how many different ways can $8$ different shirts be distributed among $4$ different people so that each receives $2$ shirts.

answered Jul 17 in Combinatory by Debargha Bhattacharj (1.3k points) | 10 views

0 votes

0 answers

# combinatorics
1) How many integers in the set {1,2,3,.....,1,00,000} contain exactly one 3, exactly one 4, exactly one 5 in their decimal representation?? 2) How many 4 digit integers are there with digit 6 exactly appearing once? 3) How many integers in the set {1,2,3,.....,1000} have distinct digits? Which type of approach is used to solve this type of questions??

asked Jul 12 in Combinatory by G Shaheena (107 points) | 18 views

0 votes

0 answers

Allan Career Institute: Discrete Math
Let $f\left ( x\right )$ be continuous probability density function of a random variable $X.$ Then probability of $a\leq X< b$ is $A)f\left ( b \right )-f\left ( a \right )$ $B)f\left ( a-b \right )$ $C)\int_{b}^{a}xf\left ( x \right )dx$ $D)\int_{b}^{a}f\left ( x \right )dx$ Plz give some link for probability of pdf

asked Jul 7 in Combinatory by srestha (247 points) | 9 views

0 votes

1 answer

Doubt on Stars and Bars Counting ROSEN Chapter 7 Advanced Counting

answered Jun 30 in Combinatory by Arkaprava (212 points) | 9 views

0 votes

0 answers

Kenneth Rosen Edition-7 Chapter-6 Example-8
How many ways are there to distribute hands of 5 cards to each of four players from the standard deck of 52 cards? Why this question can not be solved using the category of COMBINATION WITH REPETITION? I was thinking four players as four boxes with each having 5 balls and 52 cards as 52 similar balls. Please someone clarify the mistake i am doing.

asked Jun 29 in Combinatory by Masterk (110 points) | 10 views

0 votes

1 answer

combintorics--counting
How many bit strings contain exactly eight 0s and 10 1s if every 0 must be immediately followed by a 1?

answered Jun 17 in Combinatory by Arkaprava (212 points) | 7 views

0 votes

1 answer

kenneth Rosen-chapter 5 -exercise from section 5.5

answered Jun 15 in Combinatory by Arkaprava (212 points) | 16 views

0 votes

1 answer

Self Doubt (about combinatorics)
Question - In how many ways we can arange 8 boys & 5 girls such that no two girls sit together??? now in this type os qsn. why we're always taking this configuration - G B G B G B G B G B G B G B G B G (i.e here 1st 8 ... sit & then boys in middle) As the qsn. have not saying alternatively boys & girls, so what stops me to taking any of these approach??

answered Jun 15 in Combinatory by Arkaprava (212 points) | 7 views