Question

Please help me!! WILL MEDAL!

Which of the following are series?

Answer 1

your question is incomplete

Answer 2

Sorry guys

Answer 3

I want to say all but the first one

Answer 4

You sure?

Answer 5

The first looks like it has a rhythm and then ends but also what kind of series is option D?

Answer 6

almost haven't dealt with sequences or series in a while,I am 95% sure

Answer 7

option D and B are similar

Answer 8

yeah im sure the first one is not and the rest are

Answer 9

B, C, E

Answer 10

I meant B and E are similar, not sure about D

Answer 11

I think D is also a series

Answer 12

I'll check if you are right @kx2bay at the end
thank you!

Answer 13

I don't think D is a serise

Answer 14

why wouldn't it be a series? it would add 5 for 50 times

Answer 15

then you might as well say 50 times 5 right, there's no term the changes , only a constant

Answer 16

typo: there's no term that changes

Answer 17

hey I will medal at the end when I see

Answer 18

@minoz please can u help here? is D a series?

Answer 19

100% sure the only one that is not a series is the first one

Answer 20

@moemand

Answer 21

@eHoaX I know where u r coming from, you could be right, I'm trying to find a site that states what are the conditions for a series, none sate what the difference between the terms should be, they say it should be a constant difference, in this case with D this difference is ZERO, am not sure if that is ok, see the first line of this site
http://www.mathwords.com/a/arithmetic_series.htm

Answer 22

I AM 100% RIGHT! lol sorry, 100% take a chance and do what I say!

Answer 23

alright Ill check it at the end like I say. I will medal so don't worry aha

Answer 24

A and D are not series

Answer 25

5+5+5+5+...+5 isn't a series?

Answer 26

@kx2bay i think A and D are not part of any series
B and E are AP
C is sum of squares to n terms

Answer 27

thanks @minoz, there is a very fine line and I can't say for sure if the difference between the terms can be Zero or it must be different than zero, I searched the web for 30 min or not one site says if d can =0 or not :(

Answer 28

I guess @moemand you can take the gamble and go with your gutt-feel about D

Answer 29

D wasn't one if I remember.. the B,C,E one was right..

Answer 30

thanks buddy for confirming it, good luck

Answer 31

I'll need help all night