mayankdevnani
  • mayankdevnani
Solve this ONE :- Q-) Problem on SERIES. 6,20,36,48,50,?,0 a)36 b)40 c)46 d)56 Which number comes in place of "?" ?
Meta-math
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
mayankdevnani
  • mayankdevnani
@ash2326 @phi @UsukiDoll
anonymous
  • anonymous
56?
mayankdevnani
  • mayankdevnani
how?

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

UsukiDoll
  • UsukiDoll
Ned Flanders
mayankdevnani
  • mayankdevnani
what?
mayankdevnani
  • mayankdevnani
@INeedHelpPlease? help me
RadEn
  • RadEn
Tn = 7n^2 - n^3 T1 = 7(1)^2 - (1)^3 = 6 T2 = 7(2)^2 - (2)^3 = 20 .... ... T6 = 7(6)^2 - (6)^3 = 78 T7 = 7(7)^2 - (7)^3 = 0 so, it is T6 = 78
mayankdevnani
  • mayankdevnani
but it is not in options. @RadEn
mayankdevnani
  • mayankdevnani
i know this is also a answer but i need answer which is in options?
mayankdevnani
  • mayankdevnani
@hartnn can you help me ?
hartnn
  • hartnn
how did u get Tn RadEn ?
anonymous
  • anonymous
@RadEn's reasoning checks out, his answer should be 36 though. \(7(6^2)-6^3=252-216=36\)
mayankdevnani
  • mayankdevnani
he makes the series to solve it. @hartnn
hartnn
  • hartnn
yeah, i know how to find Tn, but i wanted to know whether RadEn used any different/simpler method....
mayankdevnani
  • mayankdevnani
his method is wrong.
hartnn
  • hartnn
he got the answer which is in the choices, how u say its wrong ?
mayankdevnani
  • mayankdevnani
because if we put n=6,the answer comes to be is 36 but in actual(followed by series)the answer would be 50
mayankdevnani
  • mayankdevnani
isiliye mujhe lagta h ki voh galat h
hartnn
  • hartnn
" in actual(followed by series)the answer would be 50" what does this even mean ?
mayankdevnani
  • mayankdevnani
iska matla agar hum uske tarike se follow karien to iska answer 50 aana chaihye series ke hisaab se lekin actual main 36 aa raha h..... iska method thode se hi digits ke liye apply hota h
mayankdevnani
  • mayankdevnani
now understood @hartnn bhaiya
hartnn
  • hartnn
lol, i could translate that in hindi myself too
hartnn
  • hartnn
why u say answer should be 50 ?
mayankdevnani
  • mayankdevnani
bhaiya , yeh question ntse 2013 RAJ. main poocha gaya tha aur FIITJEE vaalein bata rahein h ki iska answer DATA INADEQUATE h aur CAREER POINT vallein bata rahein h ki iska answer 36 h
mayankdevnani
  • mayankdevnani
to iska kya answer hoga bhaiya?
mayankdevnani
  • mayankdevnani
@hartnn
hartnn
  • hartnn
the answer to this is indeed 36 as shown corretly by RadEn
mayankdevnani
  • mayankdevnani
okk...thank you,,, @hartnn and @RadEn
hartnn
  • hartnn
i just wanted to know any simpler way of finding Tn :P
mayankdevnani
  • mayankdevnani
yeah...this logic doesn't apply in NTSE STAGE 1
mayankdevnani
  • mayankdevnani
i think there is another logic simpler logic for this
hartnn
  • hartnn
i think it does apply, the third differences are constant
hartnn
  • hartnn
|dw:1385197162928:dw|
hartnn
  • hartnn
so, x - 52 - (-10) = -6
hartnn
  • hartnn
x= 42 - 6 = 36
hartnn
  • hartnn
@mayankdevnani @RadEn any simpler way to find Tn ?
RadEn
  • RadEn
wolfram is simpler way , @hartnn hehehe :) why i cant see notification in OS ??
RadEn
  • RadEn
http://www.wolframalpha.com/input/?i=6%2C20%2C36%2C48%2C50
hartnn
  • hartnn
oh lol but i guess they can't use wolf.... so using the 3rd difference is a simpler manual way...
RadEn
  • RadEn
yeah, just input some numbers in wolfram :)
hartnn
  • hartnn
and nobody can see notifications its the bug OS admins are trying to fix
RadEn
  • RadEn
ohhhh, thanks

Looking for something else?

Not the answer you are looking for? Search for more explanations.