Posted by **Anonymous** on Saturday, September 15, 2012 at 10:29am.

A playground is being designed where children can interact with their friends in certain combinations.

If there is 1 child, there can be 0 interactions.

If there are 2 children, there can be only 1 interaction.

If there are 3 children, there can be 4 interactions.

If there are 4 children, there can be 9 interactions.

How many interactions will there be for 8 children?

- math -
**Reiny**, Saturday, September 15, 2012 at 12:01pm
Are they implying that interaction (I) between children (c) is a quadratic function ????

then

I(c)= (c-1)^2

so I(8) = 7^2 = 49

(look like a text-book editor's feeble attempt to "make mathematics real" )

- math -
**Franicsco paulino**, Wednesday, December 12, 2012 at 9:42pm
A playground is being designed where children can interact with their friends in certain combinations.

If there is 1 child, there can be 0 interactions.

If there are 2 children, there can be 6 interactions.

If there are 3 children, there can be 15 interactions.

If there are 4 children, there can be 27 interactions.

How many interactions will there be for 7 children?

60

81

105

108

- math -
**Nicole**, Monday, January 14, 2013 at 5:13pm
105

## Answer this Question

## Related Questions

- Math - If there's one child that can be zero interactions if there are two ...
- edu - When a child is transitioning into your classroom, it is best for the ...
- Probability - We are given the following statistics about the number of ...
- probability - PROBLEM 7: SAMPLING FAMILIES (3 points possible) We are given the ...
- Probability - We are given the following statistics about the number of children...
- Child Care - Children with special needs may have delays or be slow to progress ...
- edu - Child-teaching-child events: a. focus children to be friends b.are not ...
- Statistics - Supposed (as is roughly correct) that each child born is equally ...
- Math - Adult tickets for a play cost $15 and child tickets cost $6. If there ...
- math - Adult tickets for a play cost $15 and child tickets cost $6. If there ...

More Related Questions