470 views

1 Answer

Best answer
1 votes
1 votes

1) 10 similar roses distributed among 3 girls(girls are different).

     let the 3 girls be x,y,z such that  x+y+z=10 

                                                                = C(n+r-1,r-1)

                                                                =C(12,2) = 66

2)10 different roses distributed to 3 different girls.

     (note : here the funda is to fix the non movable object : fix girls)

1st rose can be given in 3 ways.

2nd rose can be given in 3 ways.

.

.

10 roses can be given in 310 ways = 59049

 

selected by

Related questions

28 votes
28 votes
3 answers
1
1 votes
1 votes
2 answers
2
aditi19 asked May 14, 2019
824 views
What will be solution of recurrence relation if roots are like this: r1=-2, r2=2, r3=-2, r4=2is this the case of repetitive roots?
1 votes
1 votes
0 answers
3
Ayush Upadhyaya asked Dec 20, 2017
542 views
How many positive integers less than 1,000,000 have the sum of their digits equal to 19?
1 votes
1 votes
1 answer
4
rohit vishkarma asked Oct 7, 2017
438 views
number of string of length 3 using 4 distinct alphabet...including string of length zero and what if dont.?