We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
0
137
1
avatar

(Sry for bad eng)Our teacher took up a question that she neither anyone else can solve and we are asking for help.

 

10 tulips

5 of each color

 

there’s 15 diffrent ways.

How many colors?

 

We know the answer but not how to solve it. Please, help now!

 Sep 7, 2018
 #1
avatar+5172 
+1

The 10 tulips, 5 of one color and 5 of another is a bit of a red herring.

 

You are basically choosing 2 colors out of n.

 

\(\text{so you need to find }n \ni \dbinom{n}{2}=15 \\ \\ \text{a bit of testing quickly reveals that }n=6\)

.
 Sep 7, 2018

14 Online Users