[brindha_arun]

WOW!
great expln. thanks try out this one


If a three digit number is formed from the digits
1,2,3,4,5,6, and 7,with no repetitions, tell how manyof these three digit numbers will have a number value between 100 and 500.

my answer is 120
pl verify my anwer

Originally Posted by samy_dg

Required probability
=(Probability that 1st bottle is chosen & ball is red)+(Probability that 2nd bottle is chosen & ball is red)
=(1/2)X(1/3)+(1/2)X(1)
=2/3.