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Sum of whole numbers from 1 to N
(n^2+n) /2
Handshake problem
(n^2-n) /2
sum of the first n odd numbers
n^2
sum of the first odd integers 1-n
(n/2)^2
lcm
multiply greatest exponents of numbers in prime factorizations
gcf
multiply least common exponents of prime factorizations of two numbers
types of triangles
Author
t3l3tubie
ID
55236
Card Set
Math tricks
Description
<b> I don't like descriptions </b>
Updated
2010-12-12T16:10:37Z
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