Brain Teasers ’15-1

1.  WordPlay  I am a word with six letters.  When one letter is removed, I am now 12.  What word am I?  (Sent along by subscriber Anita Dixon.  Her quick view of the original and my poor memory may have altered the translation somewhat.)
2.  Digital Dilemma Find a 5-digit number where the sum of all the digits is 25, and each digit is 2 more than the digit preceeding it.
3.  HUH?  🙂  What number is 20 more than twice the number that is 10 more than 15 times one-half of ten?
4.  Counterfeit Coin, Part 1  You have 12 coins in front of you, knowing that one of them is counterfeit.  All you know is that the ‘bad’ coin is slightly heavier than the others.   You also have a balance scale in front of you, and your task is to determine the ‘bad’ coin using only three (3) weighings*.  How do you accomplish this?
*A weighing occurs any time you set something on both sides of the scale.
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Submit Answers!  There are NO tests and the answers are NOT graded, so lighten up!  🙂  If you want to submit  your answers to any or all of these, PLEASE feel free to do so!!  

You can always do this 3 ways:  1)  Use the Leave A Reply section below (though I may not make it public until after the deadline);   2) reply to (or contact) me directly by e-mail or by replying to any Weekly Sharing; or 3) by using the Contact Form link.   Your anonymity is protected for all formats (but only until submission deadline for the Leave a Reply format. )
Reminder:  Deadline for submissions (at least for recognition) is noon on Thursday 1/22.  

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