Question

1 4 7 11 15 19

Clue: It is less than 19.

I have no idea what the answer is, and will not know until Monday.

Answer 1

whats the question?

Answer 2

15?

Answer 3

Hah, my bad. What's the next number in the sequence.

Answer 4

i hate these >.> the answer could be anything. Literally.

Answer 5

true

Answer 6

And when we find out the answer, it will seem ridiculously obvious.

Answer 7

No no, i mean it really could be anything. Its possible to create an infinite amount of formulas that fit those first 6 terms. Each one will produce a different next term.

Answer 8

Apparently the clue is really helpful.

Answer 9

thats why i dont like these anymore.

Answer 10

got it

Answer 11

17

Answer 12

Give me 6 numbers from -5 to 5, and not 0. i'll create a formula that works.

Answer 13

the sequence is the number of letters of the number in word form. "nineteen" has eight letters, while "seventeen" has nine letters

Answer 14

-5, -4, -3, -2, 5, 2

Answer 15

k, give me 10 mins, gotta do calculations

Answer 16

ha simple goolgle search
its effective

Answer 17

I'm confused problemsolver. 1 has 3 letters, but there's no 3 anywhere in the sequence?

Answer 18

Oh, I think I get you now. One has 3 letters, Four has 4 letters, Seven has 5. So we need to find a number that has 9 letters in it.

Answer 19

ya

Answer 20

I have no idea what the answer is, and will not know until Monday.
this changed to
I have ABSOLUTE idea what the answer is, and know today

Answer 21

Indeed!

Answer 22

http://www.wolframalpha.com/input/?i=-29%2F525%28-5%29^n%2B41%2F108%28-4%29^n-21%2F20%28-3%29^n%2B223%2F168%28-2%29^n%2B2221%2F2520%282%29^n-59%2F18900%285%29^n%2C+n+%3D+6

Scroll to the end of the equation, and you can change the value of n.

Answer 23

what is that?
joemath

Answer 24

its a function of n that for n=1,....,6 will spit out 1, 4, 7, 11, 15, 19.

Answer 25

kk

Answer 26

The 7th number isn't less than 19 though!

Answer 27

this is what it looks like:

Answer 28

i know the 7th number isnt less than 19, thats why i dont like these type of questions. Its possible to create an infinite amount of formulas that will match those 6 numbers, but their end behavior is all different.

Answer 29

if i choose numbers other than the ones you gave me, i would get a different result.

Answer 30

yeah i know
i too hate these type of q's

Answer 31

and how can someone prove that their answer is the true one for the 7th term? what makes their 7th term more valid that any of the other 7th terms that could come up?

Answer 32

what is the 7th term according to my formula anywhos? i didnt check lol

Answer 33

91

Answer 34

lolol

Answer 35

u have to option , 17 and 21 , but 21 is correct , one (3) four (4) seven (5) eleven (6) fifteen (7) nineteen (8) twenty one (9 alphabet ) , and another reason is , this sequence is ascending, so 21 is correct :)