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Good Luck.
PS: The first ? might be -2.Not Sure

EXPLAIN

2007-02-13 23:14:01 · 13 answers · asked by Anonymous in Science & Mathematics Other - Science

13 answers

16.
The actual series was 97 88 72 51 26 10
You've given only the differences

2007-02-21 00:07:27 · answer #1 · answered by Anonymous · 1 0

Too bad you don't know the first one, this is not a lot to go on.

Two consequtive squares, a non square, then the next square.

According to that pattern, it is:

3^2 , 4^2, 3*(3+4), 5^2

and it would continue like this:

6^2, 5*(5+6), 7^2, 8^2, 7*(7+8), 9^2, 10^2
or
36, 55, 49, 64, 105, 81, 100

and it'd start with
1^2, 2^2, 1*(1+2) or
1, 4, 3

2007-02-14 00:00:34 · answer #2 · answered by mgerben 5 · 1 1

No clue. I can see some pattern with the 1's (3 in the first row,3 in the second,5 in the third,2 in the fourth,3 in the fifth and sixth) and the repeated numbers,but no more.

2016-03-29 06:02:49 · answer #3 · answered by Anonymous · 0 0

consider this as two series:

1. 9,21,_
2. _,16, 25,_

second is simple: 9,16,25,36 (squares)

first seq leads to many series, but i am taking the most convincing one:

First series divide by 3 => 3,7,_

=3,(3+4),_

=2+(3-2)^(3-2),3+(3-1)^(3-1),_

So next number should be 4+(3-0)^(3-0) = 4+27 = 31

Series => 3,7,31

multiply by 3 => 9,21,93

combine both to get : 9,9,16,21,25,93,36

2007-02-15 05:59:13 · answer #4 · answered by Neo 2 · 0 0

omg thats the hardest sequence i've seen in my life. I dont know the answers but the difference between each of the consecutive numbers is: 7 5 4
then the difference between the differences is : -2 -1
then the difference between THOSE differences is: -1

so the equation you use to find the answers may have n to the power of 3 in it somewhere (n is the number's position in the sequence (eg. n for 9 is 2)

i'd start with that

2007-02-13 23:30:01 · answer #5 · answered by Anonymous · 1 0

5, 9, 16, 21, 25, 32, 37

add 4 to 5 and get 9, add 7 to 9 and get 16, add 5 to 16 and get 21, add 4 to 21 and get 25, add 7 to 25 and get 32, add 5 to 32 and get 37 do you see the pattern?

2007-02-13 23:27:27 · answer #6 · answered by Brown eyed girl 7 · 0 2

7,9,16,21,25,33,34.. you should calculate the difference between two numbers..
7=3*2+1
16=3*5+1
25=3*8+1
9=3*3
21=3*7
33=3*11

2007-02-15 15:22:30 · answer #7 · answered by Anonymous · 0 0

The pattern is +4, +7, and +5 So the answer will be 5,9,16,21,25,34,39 (+4, +7, +5, +4, +7, +5)

2007-02-13 23:42:03 · answer #8 · answered by brownie 2 · 0 2

7, 9, 16, 21, 25, 31, 64

I came up with this via a web-search (please see a web-link to a description of the sequence listed in "Source(s)" below)

Hope that helps... :)

2007-02-13 23:51:55 · answer #9 · answered by Synapse 2 · 2 0

it goes by 5 for the first three but from 21 to 25 it's 4. so i'd guess 4 for number one as for the second one i'm unsure.

2007-02-13 23:22:29 · answer #10 · answered by Gen 4 · 0 3

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