Need help in Sequencing

1. What is the next term in the sequence 15, 6, 21, 27, 48 _____? How do you get to that answer? I'm confused.

2. What type of a sequence is number 7?

Thank you,

mpr

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- Sep 24th 2007, 02:44 PMmprneed help in sequencing
**Need help in Sequencing**

1. What is the next term in the sequence 15, 6, 21, 27, 48 _____? How do you get to that answer? I'm confused.

2. What type of a sequence is number 7?

Thank you,

mpr - Sep 24th 2007, 03:57 PMJhevon
we can define this sequence recursively.

$\displaystyle a_1 = 15$, $\displaystyle a_2 = 6$, $\displaystyle a_n = a_{n - 1} + a_{n - 2}$, for $\displaystyle n \ge 3$, $\displaystyle n \in \mathbb{N}$

so the next term is 48 + 27 = 75

Quote:

2. What type of a sequence is number 7?

Thank you,

mpr

- Sep 24th 2007, 05:30 PMPlato
Surely all realize that this is a totally meaningless question.

There are many, many answers that can be augured for.