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2015-08-10T21:32:00+08:00

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Arithmetic Sequence that are between 2 given terms are called Arithmetic Mean.

Example:

3 Arithmetic Mean
17, _, _, _, 1

a1=17
a2=5 (kung ilan silang lahat)
n= 5
d= ?

Solutions:

1=17+(5-1)d
1=17+(4)d
1-17=4d over 4
d=4
1 1 1