IBM
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Numerical Ability
Permutation and Combination
How many ways can 4 prizes be given away to 3 boys, if each boy is eligible for all the prizes?
Read Solution (Total 10)
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- The 4 prizes can be distributed to 3 boys in 3^4 =81ways
- 13 years agoHelpfull: Yes(38) No(19)
- 4prizes can be distributed to 3 boys in 4P3 ways(permutation) i.e.,4x3x2=24ways
- 13 years agoHelpfull: Yes(35) No(13)
- 15 ways.
b1 b2 b3
no of prize 4 0 0
3 1 0
3 0 1
2 2 0
2 0 2
2 1 1
1 3 0
1 0 3
1 2 1
1 1 2
0 4 0
0 0 4
0 3 1
0 1 3
0 2 2
- 12 years agoHelpfull: Yes(7) No(9)
- For the first time aprize can be any one of the 4. once a prize is given away remaining 3 prizes can be given away in 3c2 ways to the remaining two people.So each prize has 3c2 i.e. 6 ways of giving associated with it .So for 4 prizes total no of ways =6*6*6*6=6^4 ways.
- 12 years agoHelpfull: Yes(3) No(7)
- Let the 3 boys be B1, B2, B3 and 4 prizes be P1, P2, P3 and P4.
Now B1 is eligible to receive any of the 4 available prizes (so 4 ways)
B2 will receive prize from rest 3 available prizes(so 3 ways)
B3 will receive his prize from the rest 2 prizes available(so 2 ways)
Finally B4 will receive the the last remaining prize (so 1 way)
So total ways would be: 4*3*2*1=24 Ways
Hence, the 4 prizes can be distributed in 24 ways.
- 8 years agoHelpfull: Yes(2) No(1)
- first boy would get one prize from 4 available prizes,
second boy would get one prize from remaining 3 available prizes,
third boy would get one prize from remaining 2 available prizes,
So 4*3*2=36
- 12 years agoHelpfull: Yes(1) No(20)
- (n+r-1)C(r-1)=6C4= 15.
- 10 years agoHelpfull: Yes(1) No(1)
- correct answer?
- 7 years agoHelpfull: Yes(0) No(0)
- Each prize can be given to 3 boys
no of ways= 3^4=81 ways(n^r where n=3 and r=4) - 5 years agoHelpfull: Yes(0) No(0)
- Let the 3 boys be B1, B2, B3 and 4 prizes be P1, P2, P3 and P4
Now B1 is eligible to receive any of the 4 available prizes (so 4 ways)
B2 will receive prize from rest 3 available prizes(so 3 ways)
B3 will receive his prize from the rest 2 prizes available(so 2 ways)
So total ways would be: 4 × 3 × 2 × 1 = 24 Ways
Hence, the 4 prizes can be distributed in 24 ways - 4 years agoHelpfull: Yes(0) No(0)
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