Page 15 - Practicum 5_Buku Digital Flip pdf_Grace Margareth_Arithmetic Sequence and Series Grade XI

Mathematics Teaching Material Sequence and Series Grade XI

In your opinion,

what is an
arithmetic?

sequence?

Illustration 2

Look at the picture of a pile of oranges on the

side! How to determine or guess how many

oranges are in one pile?

Picture: Pile of Citrus Fruits

Alternative Solution:

If you look at the picture above, you will get an arrangement of several oranges. The
oranges can be arranged to form a pyramid.

Picture: Orange Pyramid

Arrangement
There will be more oranges at the bottom of the pile than at the top. Suppose the
arrangement of oranges is simplified into a triangular arrangement, as shown below.

Picture: Arrangement of Triangular Circles

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