Jan/Feb ’18 Brain Teasers

  1.  Answer either or both:  If you could spend $1 a minute,  how long would it take you to spend $1,000,000?  If you spent a $20 bill a minute, how long would it take to spend one billion dollars?
  2. A bottle of old brandy costs $45.  The brandy costs $40 more than the empty bottle.  What is the cost of the empty bottle?
  3. James says “I have as many brothers as sisters.”  His sister says, “I have twice as many brothers as sisters.” How many brothers and sisters are in this family?
  4. How many 3-digit numbers have all odd digits?  Is the answer the same for all even digits?
  5. Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday Friday, Saturday, or Sunday, or any of the months of the year?
  6. A man and his son are in a car wreck, and are taken to different hospitals.   At the emergency room of the hospital where the boy was taken, the attending physician gasps and says ” I can’t work on this patient – he’s my son!”  How can this be?
  7. This is an unusual paragraph.  I’m curious how quickly you can find out what is so unusual about it.  It looks so plain you would think nothing is wrong with it.  In fact, nothing is wrong with it!  But it is unusual, though.  Study it, and think about it, but you still may not find anything odd.  But if you work at it a bit, you might find out.  Try to do so without any coaching!
  8. Ralph is trying to limit his coffee input, so he alternates days of drinking coffee and hot tea. He drinks coffee on odd-numbered mornings, and hot tea on even-numbered mornings  Further, he always allows himself coffee on Mondays, regardless of date.  He’s discovered that under these conditions, there are occasionally circumstances in which he could drink coffee for four straight days.  Can you deduce those circumstances?
  9. How many total minutes will there be in this month (February 2018)?  (Note:  This BT is similar to [and perhaps easier than?] #1 above, but it’s here for a special reason.  The answer reveals a neat new FUN NUMBER FACT!) (Emphatic Hint!  The answer involves the number 8!)
  10. Which number has more total divisors:  60 or 160?
  11. Carpet is being advertised for $11.99 per square yard.  (Call it $12 if you’d rather.) How much will it cost for the carpet only to fully carpet a small 9′ x 12′ bedroom?  (As with most fake word problems, you may ignore costs of padding, labor, tax, etc.)
  12. An Antarctic base reports the temperature as ‘forty below zero’, but neglects to note whether that’s Fahrenheit or Celsius.  Obviously, these are both COLD, but which is colder?

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