Bosco

   You have 2 red cards (Heart and Diamond) and 2 black cards (Club and Spade).     

   What is the probability to choose two cards at random, and each card be of different colors?     

   The first card can be anything.     

   After you choose it, there are three cards remaining, and two of them are the different color.     

   So, the probability of the second card being a different color would be 2 / 3, or 67% (rounded).     

   _.     

   _+_+_=30 choices is 1,3,5,7,9,11,13,15     

   This can't be solved, because the sum of three odd numbers will always be an odd number.     

   But what you can do is turn the 9 upside down, and add up the following:  6 + 11 + 13 = 30     

   _.     

   what is a foot in metres     

   1 foot  =  0.3048 meter

   A meter is a little longer than a yard.  The following     

   conversion isn't exact, but you can ball park a meter     

   by saying it would be like a yard, but with each of its     

   three feet composed of 13 inches instead of 12.     

   _.     

    What makes an equation not direct variation?     

    The opposite of direct variation is indirect variation.      

    Example:  y = x  varies directly.  When x gets larger, y gets larger too.     

                     y = 1 / x varies indirectly.  When x gets larger, y gets smaller.     

    _.     

   How do you make 10 out of 9     

   Puzzle?  Use nine matchsticks to spell out the word T E N.     

   _.     

   Find the surface area of this composite solid.     

   Four times —>  (1/2) • base • height  =  4 • 2 • 3  =    24   pyramid     

   Four times —>  base • height             =  4 • 4 • 5  =    80   sides of block     

   One  times —>  length • width            =  1 • 4 • 4  =    16   bottom of block     

                                           total (add them up)        =  120     

   _.     

   is it possible for a number to be a rational number that is not an integer but is a whole number?     

   No.  An integer is defined as a whole number, which means that     

           a number cannot simultaneously be an integer but not a whole number.     

   _.