Posted by **Sandy** on Monday, October 14, 2013 at 1:12pm.

State the rule for this pattern:

1,5,11,19

What about: subtract the last number and add 2 to the next term

- Math -
**Steve**, Monday, October 14, 2013 at 2:28pm
using your rule, do you get the given sequence?

Here's a method of attack:

You know that 1+3+5+...+n = n^2

adding up the 1st n odd numbers gives you n^2.

In your sequence, you have

1 1+4 1+4+6 1+4+6+8

which looks very similar. So, expect something with n^2 in it.

1 = 2^2-3

5 = 3^2-4

11 = 4^2-5

19 = 5^2-6

So, it looks to me like

Tn = (n+1)^2 - (n+2) = n^2+n-1

## Answer This Question

## Related Questions

- math - Kurt used the rule add 4, subtract 1 to generate a pattern. The first ...
- Math - what is the rule for this pattern 12 15 18 21 A.start with 12 and ...
- Pre-Algebra - Write a rule for this pattern.Fing the next three numbers in the ...
- Math: Pattern - Use the rule to write the first 12 terms in the pattern. Rule: ...
- Pattern - Can someone help me find the pattern and the next 3 numbers in the ...
- Math - use the rule to write the first twelve numbers in the pattern. describe ...
- math - A number pattern has 75 as its first term. The rule for the patterm is ...
- math - patterns with fractions write a rule for the sequence.then,find the ...
- math 6 rule pattern - The same rule is used on each of these number column A to ...
- Math - I am confused with rule of pattern 1,3,6, I figured out 10 is the next ...

More Related Questions