# Math

posted by .

Please find the next THREE numbers in the patterns and explain how you got them:

1) 5, 5/2, 5/4, 5/8, 5/16....

2) 1, -3, 9, -27, 81...

3) 1/2, 1/2, 3/8, 1/4, 5/32...

4) -9, 101, -999, 10001, -99999...

• Math -

1. each new number is 1/2 times the previous one ..

2. How about (-3)^n , were n = 0,1,2,3,...

3. What if I rewrote you fractions as

1/2 , 2/4, 3/8 , 4/16, 5/32 ...
Can you see what is happening ?

4. the odd-position numbers are all negative and contain as many 9's as the position in the sequence
e.g. the 7h number would be 9999999 (7 nines)
the even-position numbers are all positive and start and end with 1, with one less 0 between them as then position of the number
e.g. the 6th number is 1000001 (five 0's between the 1's)

## Similar Questions

1. ### using patterns

I am having trouble working on number patterns. I have to find the last three numbers of each pattern: 1)17,16,13,12 2)1,2,4,7 3)1,4,9,16 4.) 8,27,64 please help I don't understand amd my parents are trying their best to help me 4) …
2. ### math

determine the next three numbers in this pattern: 2,3,5,7,11,13,17,19,23,___,___,___ Aren't these all prime numbers?
3. ### 9th grade

I am woking on Patterns and Inductive reasoning. I need help on numbers 14-16. Find the next two sequence. 14. Martha, Abigail, Martha, Dolley... 15. Geroge, Thomas, Abe, Alexander.... 16.Aquarius, Pisces, Aries, Taurus.... Please …
4. ### 7th grade Math

Find the next three numbers in this sequence and explain the reasoning; 2/3, 2/5, 6/25, 18/125,...
5. ### math

Name three numbers between 0.33 AND 0.34 PLEASE EXPLAIN HOW YOU GOT THE ANSWER!!!:)
6. ### math

Determine the pattern: What comes next? . 1,1,2,4,7,_ .4,9,16,25,_ Explain. I do not get the patterns. Please help me. Thank you.
7. ### 5th math

What are the next three numbers in this pattern?

9. ### Math

If no digit can be used more than once, how many 5-digit numbers can be formed only using the numbers 3,8,1,2,5, and 7?
10. ### Math

Write the next three numbers of the patterns . 55786,55886,55986

More Similar Questions

Post a New Question