Posted by lesly on Monday, March 14, 2011 at 5:02pm.
Find a shortcut for computing the sum: 1+3+5+7++11+13+15+17=?? Explain your shortcut and how you could use this same shortcut to find the sum of all the odd numbers form 45 to 99.
math - Reiny, Monday, March 14, 2011 at 5:39pm
what is the sum of the 1st and last?
what is the sum of 2nd and 2nd last ?
what is the sum of 3rd and 3rd last ?
math - Anonymous, Monday, March 14, 2011 at 6:16pm
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