A drinks machine offers three solutions – Tea, Coffee or Random but the machine has been wired
up wrongly so that each button does not give what it claims. If each drink costs Rs. 50, what is the
mimimum amount of money that must be spent to determine with certainity the correct labeling of the
buttons?

• rs.50...
  1st select random machine...let it contains tea..so it is clear thet it is a tea machine
  =>for cofee labelled machine ,it should b random, as it should nt b cofee
  =>tea labelled machine it should b cofee
  so 50rs is enough to determine correct labels
• 11 years agoHelpfull: Yes(23) No(5)
• 100 suppose if he wants tea ,now if he would try for 1st machine then there is no certainity of getting a correct ,if he will try two there are two possibilities so 100 rs
• 11 years agoHelpfull: Yes(7) No(3)
• cant be determined
• 11 years agoHelpfull: Yes(4) No(10)
• ,mmmmmmmmmmm
• 11 years agoHelpfull: Yes(0) No(2)
• Rs. 100..... subham is absolutely right.
• 11 years agoHelpfull: Yes(0) No(1)
• To check the first button whether it is tea or coffee,Rs.50 is being spent.
  To check the second button more Rs.50.
  and for therandom button,Rs50 is spent.So total=150
• 11 years agoHelpfull: Yes(0) No(3)