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In how many ways 7 different people can sit in 4 buses if any people can sit any bus ?
1)7C4
2)7P4
3)7^4
Read Solution (Total 12)
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- If we ask all the 7 persons to go and sit in the buses one by one, every person will have 4 choices. He/she can sit in any one of the 4 buses.
So, the number of ways in which one person can sit in which one person can sit in 4 buses = 4.
The same goes for remaining 6 persons.
So, the total number of ways in which 7 persons can sit in 4 buses = 4 (multiplied 7 times) i.e. 4^7.
So, the answer is 4^7. - 6 years agoHelpfull: Yes(9) No(0)
- Where as given that 7 people can sit in any bus so all of them can sit any one bus also
so i think 7^4 ways - 6 years agoHelpfull: Yes(5) No(6)
- Given that a person can sit on any bus.
This means, the 1st person has 4 buses to choose from AND 2nd person also has 4 buses to choose from AND 3rd person has 4 buses to choose from. ( 4 buses to choose from means there are 4 possible outcomes)
Just writing the possibilities for 1st, 2nd, 3rd person and so on, we get
4 AND 4 AND 4 AND.... and so on.
Remember AND means multiply.
4 * 4* 4 * 4* 4 * 4 * 4 => 4^7 is right - 6 years agoHelpfull: Yes(5) No(0)
- The 1st person can go and sit in any of 4 buses so 1st person can sit in 4 ways similarly 2nd person has 4 ways and so on....,therefore 4*4*4*4*4*4*4=4^7 ways
- 6 years agoHelpfull: Yes(3) No(0)
- 7p4
no explanation needed - 6 years agoHelpfull: Yes(1) No(5)
- Its belongs to Arrangements so permutation is applicable so and is 7p4
- 6 years agoHelpfull: Yes(1) No(4)
- 7P4 , out of seven people there is four option.
- 6 years agoHelpfull: Yes(0) No(4)
- It's arrangement so it is permutation
nPr=n!/(n-r)! - 6 years agoHelpfull: Yes(0) No(4)
- arrrangement 7p4
- 6 years agoHelpfull: Yes(0) No(2)
- permutation nPr=n!/(n--r)!
7P4 - 6 years agoHelpfull: Yes(0) No(2)
- 3 as it given anyone can sit in any bus
- 6 years agoHelpfull: Yes(0) No(2)
- why not 7p4 we arranging them right??
- 6 years agoHelpfull: Yes(0) No(2)
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