7
Problems(3)
SMT 2007 Team #7
Source:
6/30/2012
Daniel counts the number of ways he can form a positive integer using the digits , and (each digit at most once). Edward counts the number of ways you can use the letters in the word "" to form a six-letter word (it doesn't have to be a real English word). Fernando counts the number of ways you can distribute nine identical pieces of candy to three children. By their powers combined, they add each of their values to form the number that represents the meaning of life. What is the meaning of life? (Hint: it's not .)
Boat and Current Speed Relationships
Source:
3/15/2010
A boat is traveling upstream at 5 mph relative to the current flowing against it at 1 mph. If a tree branch 10 miles upstream from the boat falls into the current of the river, how many hours does it take to reach the boat?
SMT 2007 Algebra #7
Source:
6/27/2012
Find the minimum value of for real.