MHB How many ways can equal number of men and women line up for a photo?

  • Thread starter Thread starter find_the_fun
  • Start date Start date
  • Tags Tags
    Line Photo Women
AI Thread Summary
The discussion focuses on calculating the number of ways to line up an equal number of men and women for a photo from a group of 4 men and 3 women. The proposed solution involves using combinations and factorials to account for different group sizes: one man and one woman, two men and two women, and three men and three women. The calculations provided are correct, yielding the total number of arrangements for each scenario. The final answer confirms the validity of the approach taken. This method effectively demonstrates how to solve combinatorial problems involving equal group sizes.
find_the_fun
Messages
147
Reaction score
0
In how many ways can a non-empty collection of people to be chosen from 4 men and 3 women to lineup for a photo if the number of men must be the same as the number of women?

I said

[math]{4 \choose 1} {3 \choose 1} 2! +{4 \choose 2} {3 \choose 2} 4! + {4 \choose 3} {3 \choose 3} 6![/math]

Is this right?
 
Physics news on Phys.org
find_the_fun said:
In how many ways can a non-empty collection of people to be chosen from 4 men and 3 women to lineup for a photo if the number of men must be the same as the number of women?

I said

[math]{4 \choose 1} {3 \choose 1} 2! +{4 \choose 2} {3 \choose 2} 4! + {4 \choose 3} {3 \choose 3} 6![/math]

Is this right?
Yes.
 
Back
Top