How many ways are there to split a group of 6 girls into two groups of 3 girls each? (The order of the groups does not matter)
Choose the correct option: A) 35 B) 10 C) 40 D) 20 E) 25
the combination is 6C3 /2   = 6!/3!*3!*2 = 20/2= 
<gadget id="calculator">20/2</gadget>
<output>10</output>
10   10
<result>B</result>
How many ways are there to split a group of 6 girls into two groups of 3 girls each? (The order of the groups does not matter)