A shopkeeper has 13 washing machines out of which 5 are defective. A customer buys 3 washing machine. What is the probability that exactly one machine is defective?
(a) 1/20 (b) 1/5 (c) 70/143 (d) 35/143
Each and every person in this world are having "constant mind"...DIFFERENTIATE others mind and INTEGRATE urs.MATHEMATICS SIMPLY MAKES YOU UNSTOPPABLE !!!
VIBHAV ANAND
MATHEMATICS IS LIKE TRUE LOVE- A SIMPLE IDEA BUT CAN GET COMPLICATED...