Answers

2015-03-08T18:35:45+05:30
sachin

total balls=40
number of sixes=12
probability of six=12/40=6/20=3/10

Sauabh
total balls =30
number of fours=9
so number of other balls=30-9=21
probabiity to not four= 21/30
1 4 1
why both the ans seems to be different
coz its wrong
u also will be knowing that probablity = no of event / total number of observations and see what he has done total number of observations/no of event
12/40=6/20=3/10
see what u have typed