Brain Teasers
Kebab Dinner
On every Sunday Mad Ade, Thorny Kator and Bill Sticker lunch together at "Sweaty Chef Kebab Shop" where they order Kebab and napalm chilli sauce based on following facts.
Unless neither Mad Ade nor Thorny Kator have Kebab and napalm chilli sauce, Bill Sticker must have it.
If Mad Ade does not have Kebab and napalm chilli sauce, either Thorny Kator or Bill Sticker or both have it.
Bill Sticker has Kebab and napalm chilli sauce only if either Mad Ade or Thorny Kator or both have it.
Thorny Kator and Bill Sticker never have Kebab and napalm chilli sauce together.
Who orders Kebab and napalm chilli sauce?
Unless neither Mad Ade nor Thorny Kator have Kebab and napalm chilli sauce, Bill Sticker must have it.
If Mad Ade does not have Kebab and napalm chilli sauce, either Thorny Kator or Bill Sticker or both have it.
Bill Sticker has Kebab and napalm chilli sauce only if either Mad Ade or Thorny Kator or both have it.
Thorny Kator and Bill Sticker never have Kebab and napalm chilli sauce together.
Who orders Kebab and napalm chilli sauce?
Answer
Mad Ade and Bill Sticker both have Kebab and napalm chilli sauce, whereas Thorny Kator never does.Fact (2) can be alternatively stated that "either Mad Ade or Thorny Kator or Bill Sticker must have Kebab and napalm chilli sauce".
From Fact (3), it can be inferred that either Mad Ade or Thorny Kator must have Kebab and napalm chilli sauce.
Now, from Fact (1), it is apparent that Bill Sticker too must have Kebab and napalm chilli sauce. But according to Fact (4), Thorny Kator cannot have Kebab and napalm chilli sauce when Bill Sticker does.
Thus, Mad Ade and Bill Sticker both have Kebab and napalm chilli sauce, whereas Thorny Kator never does.
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