Permutations and Combinations
 
 
Enter MATH to see the math menu
PROB (F2) for Probability
Now we are ready to compute, e.g. the number of outcomes for the Texas State Lottery drawing, or
50C6 
 
Enter: 50 nCr  6 ENTER
You have 1 out of 15,890,700 chances of winning the the Texas State Lottery if you buy one ticket!  
Permutations are similar (choose nPr).  
Factorial: 10! would be 10 !