SOLUTION: If I have the following numbers: 2,6,12,20,30,42... I can see the relationship between the numbers: +4 +6 +8 +10 +12 +2 +2 +2 +2 What kind of sequence is this?

Question 503508: If I have the following numbers:
2,6,12,20,30,42...
I can see the relationship between the numbers:
+4 +6 +8 +10 +12
+2 +2 +2 +2
What kind of sequence is this? (arithmetic/geometric etc)
Thank you!
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

The two main types of series/sequences are and . Some sequences are of these.
It�s important to be able to identify what type of sequence is being dealt with.
And series is one where is equal the one before it number. For example: 5, 10, 15, 20, � Each term in this sequence equals the term before it with added on.
In contrast, a is one where each term equals the one before it by a . An example would be 3, 6, 12, 24, 48, � Each term is equal to the prior one multiplied by .
so, it's of these
RELATED QUESTIONS
What are the next 2 numbers? -2 4 -6 8 -10 12 (answered by math_tutor2020,ikleyn)

Take a look at the following sums: 1=1 1+3=4 1+3+5=9 1+3+5+7=16 1+3+5+7+9=25... (answered by ikleyn)

`Take a look at the following sums: 1=1 1+3=4 1+3+5=9 1+3+5+7=16 1+3+5+7+9=25... (answered by solver91311)

use the table and inductive reasoning. make a conjecture about each value. Question:... (answered by scott8148)

A fair six sided die is tossed. After it lands, the bottom face cannot be seen. What is... (answered by DrBeeee)

2=6 3=12 4=20 5=30 6=42 9=?? I think the answer is 56 and my husband says 90.... (answered by fcabanski)

The average of 6 numbers is 10. If the average of 4 numbers is 12, then what is the... (answered by stanbon,josmiceli,mananth)

Determine the surface area and the volume for 5 blocks and 6 blocks. Number of Blocks (answered by stanbon)

Determine the surface area and the volume for 5 blocks and 6 blocks. Number of Blocks (answered by solver91311)