SOLUTION: There are 50 currency notes of Rs 1000 and 35 currency notes of Rs 500 in a Safe. If 4 notes are drawn at random with replacement ,find the probability that total amount drawn wou

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: There are 50 currency notes of Rs 1000 and 35 currency notes of Rs 500 in a Safe. If 4 notes are drawn at random with replacement ,find the probability that total amount drawn wou      Log On


   

Question 1192543: There are 50 currency notes of Rs 1000 and 35 currency notes of Rs 500 in a Safe. If 4 notes are drawn at random with replacement ,find the probability that total amount drawn would exactly is Rs 3000 a
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
85C4 are the number of ways to choose 4 from 85
The way this works is 2-1000 notes and 2-500 notes
the numerator is 50C2*35C2=1225*595=770525
the denominator is 2024785
the probability is 0.3805