+0  
 
0
46
2
avatar

If I roll a fair, regular six-sided die four times, what is the probability that I will roll the number 5 exactly two times?

 Oct 19, 2020
 #1
avatar
+1

 (4 nCr 2 * 5^2)  / 6^4 =150 / 1296 = 25 / 216 =11.57%

 Oct 19, 2020
 #2
avatar+111602 
+1

4C2  *  (1/6)^2  *  (5/6)^2

 Oct 20, 2020
edited by Melody  Oct 20, 2020

24 Online Users

avatar
avatar
avatar