Page 10 - Practicum 5_Buku Digital Flip pdf_Grace Margareth_Arithmetic Sequence and Series Grade XI

Mathematics Teaching Material Sequence and Series Grade XI

C. Summary

1. Sequence
A number sequence is a collection of numbers arranged sequentially with a certain

pattern.
2. Number Pattern
Number patterns are certain rules that are used in forming a number sequence.

3. Series
A series is the sum of all the terms in the sequence and is denoted by

2
1. If the formula for the nth term of a sequence is = 5 − 2 , then the difference

between the third and fifth terms is...

A. 32 B. -32 C. 28 D. -28 E. 25
2
2. The formula for the nth term of a sequence is = 4 + 2 − , if the 4th term is

-36 then the value of a is …
A. -3 B. -2 C. 2 D. 3 E. 4

2
=1
3. The formula for the nth term of a sequence is = , what term is 3?

+3
A. 8 B. 6 C. 5 D. 4 E. 3
4. A sequence 1,4,7,10,… satisfies the pattern = + . The 10th term of the

sequence is...

A. 22 B. 28 C. 30 D. 31 E. 33
5. The number pattern for the sequences 44, 41, 38, 35, 32,… fulfills the formula …

A. = 44 − B. = 46 − 2 C. = 48 − 4

D. = 3 + 41 E. = 47 − 3

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