Latest Gate Aptitude Question SOLUTION: A drinks machine offers three selections - 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 5 r

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(#M40037602) GATE Logical Reasoning question Keep an EYE

A drinks machine offers three selections - 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 5 rupees, how much minimum money do you have to put into the machine to work out which button gives which selection?

Asked In Gate Hardip Bhalani (9 years ago)

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Tejas Savalia  (9 years ago)

5
put the Rs in the button named random
u will find it gives either tea/coffee
the button named tea/coffee gives coffee/tea respectively...

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alok meher  (9 years ago)

15rs


put 5 in 1st button if it gives coffe,then either it gives only coffe or random
again put 5 in 2nd if it gives coffe,then either it gives only coffe or random
now, put 5rs in 1st if it gives again coffe,then 1 st button gives only coffe, 2 nd button gives random and 3rd gives only tea.

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