Page 2 of 3 FirstFirst 123 LastLast
Results 21 to 40 of 42

Thread: Power

  1. #21
    Expert Member
    Join Date
    Jan 2007
    Answers
    272

    Re: Power

    lemme tell u wt i askd was based on a CAT question!!
    nd do u want to challenge IIMs??


  2. #22
    Contributing Member
    Join Date
    Sep 2006
    Answers
    962

    Re: Power

    Well smart coder....
    i want to clarify myself...Because "Nobody knows all the things".
    That's why i need a help for other people.

    Also it is very difficult to find the value for your logic...
    I need a clear explantion about the 2^(4k+1).

    In my next example you simply told 2^81. so you calculate the 81 like 3*3*3*3. it is single power so you can calcualte easily...if it is large then how can you find ?

    If you explain this one i accept that. Waiting for your reply...

    -------------------
    suresh


  3. #23
    Expert Member
    Join Date
    Jan 2007
    Answers
    272

    Re: Power

    I am not getting ur point...try to put another example!!
    you want other people's view...I also agree to that..beacuse we have many intellectuals present in this forum..and I want to invite everyone to read the whole thread and then comment.
    But what I asked is what I learnt at Career Launcher(a reknowned coaching for MBA) and if u ask this question to a person who is preparing for CAT will give the same answer as mine.
    Thanks


  4. #24
    Contributing Member
    Join Date
    Oct 2006
    Answers
    67

    Re: Power

    Hi smartcoder,

    first i want to know,
    u meant 4-----3 ---- then 2 for ur problem or u r saying that is the mathematic powerof logic?

    **********
    with Thanks and Regards,
    [B][I][COLOR="DarkRed"]Anushya.G[/COLOR][/I][/B]:)
    **********

  5. #25
    Expert Member
    Join Date
    Jan 2007
    Answers
    272

    Re: Power

    wt wt wt anushya?
    I m totally confused by ur question...plz write clearly!!


  6. #26
    Contributing Member
    Join Date
    Sep 2006
    Answers
    962

    Re: Power

    ok smart coder...

    Explain the following one...

    This is you already posted....

    2^3^4^5^.... = 2^3^(an even number) = 2^(4k +1) ...so the last digit shud be 2.

    2^3^5^4.... = 2^3^(an odd number) = 2^(4k+3)... so the last digit shud be 8.

    In that above you mentioned 2^3^(an even number)..

    how you told that is an even number and how you write 2^(4k+1).....Also how the value 1 came that place ?

    ------------------
    suresh


  7. #27
    Contributing Member
    Join Date
    Oct 2006
    Answers
    67

    Re: Power

    Hi,

    see, as suresh comments, i know 2^3^4 is 8^4 and accepts that nobody knows everything. We wants to know the logic that u r explaining.
    In ur comment #19 u mentioned
    "
    i meant this
    ----4
    --3
    2
    "
    So, i asked, u meant and expect this logic to be followed for ur question or u r saying this is basic logic should be followed in maths.

    **********
    with Thanks and Regards,
    [B][I][COLOR="DarkRed"]Anushya.G[/COLOR][/I][/B]:)
    **********

  8. #28
    Expert Member
    Join Date
    Jan 2007
    Answers
    272

    Re: Power

    Yes anushya ...the logic is defined already that u come top to bottom..
    and suresh this is for you:

    4^(any number) is an even number
    so 3^4^(any number) = 3^(even number)

    now 3^(even number) = 4k+1 type

    like 3^2 = 9 = 4*2 + 1
    and 3^4 = 81 = 4*20 + 1

    ne other doubts?
    please feel free to ask..


  9. #29
    Expert Member
    Join Date
    Jan 2007
    Answers
    272

    Re: Power

    anushya this is for you..tell me the last digit for

    2^1^2


  10. #30
    Contributing Member
    Join Date
    Sep 2006
    Answers
    962

    Re: Power

    hi smart coder,

    Thanks for your explanation....

    My question is how you defined that is (4k+1) format or (4k+3) format ?

    ------------------
    suresh

    Last edited by psuresh1982; 01-29-2007 at 03:52 AM.

  11. #31
    Expert Member
    Join Date
    Jan 2007
    Answers
    272

    Re: Power

    if it is 3^(even) then 4K+1
    or if 3^(odd) then 4K+3


  12. #32
    Contributing Member
    Join Date
    Sep 2006
    Answers
    962

    Re: Power

    hi smart coder,

    Thanks for your all the information....This is the first time i hear these type of concept....I want to know the concept..that's why i ask so much of questions...now i have some idea to solve these type puzzle...still i have one more doubt...

    you told me if it is 3^(even) then 4K+1.
    suppose some one give the equation...2^7^6^9^4 or simply 7^6^9^4.

    how can i solve this equation ? explain this also...

    -------------------
    suresh


  13. #33
    Contributing Member
    Join Date
    Oct 2006
    Answers
    67

    Re: Power

    Quote Originally Posted by smart_coder View Post
    anushya this is for you..tell me the last digit for

    2^1^2
    Its 4.

    I know only 2 concepts:
    1. 2^1^2
    2. the powers will be multiplied and powered to the base digit like: 2^(1*2)

    I discussed with my collegues,...agree the above two.
    nothing else .

    Also, 2^3^4 can be calculated as 8^4 or 2^12 which results same.
    2^3^4 = 2^81 will come if it is like 2^(3^4). Ofcourse brackets are important.

    **********
    with Thanks and Regards,
    [B][I][COLOR="DarkRed"]Anushya.G[/COLOR][/I][/B]:)
    **********

  14. #34
    Expert Member
    Join Date
    Jan 2007
    Answers
    272

    Re: Power

    look there can't be answers for all such type questions...u can have answers if u think very logically
    for ur question:7^6^9^4 i have a solution:
    6^(any number) is of form 4k except 6^1
    in ur question it is obvious dat it 6^(a large number) so it will be of type 4k
    Now 7^(4k) will always end with a 1.


  15. #35
    Expert Member
    Join Date
    Jan 2007
    Answers
    272

    Re: Power

    For u anushya:
    u can c many problems when brackets are not applied but d meaning is applied like the following examples:

    --4
    -3
    2
    this is not equal to

    -12
    2


    u cannot multiply the powers until the brackets are told explicitly..


  16. #36
    Expert Member
    Join Date
    Jan 2007
    Answers
    249

    Re: Power

    Yeah Smart coder i agree with u...

    2^3^4 is equal to 2^81....

    if there is no bracket then the concept is top to bottom approach... Here first we need to find 3^4 and then 2^81

    if we want to find bottom to top approach then we should use bracket its mandatory...

    (2^3)^5 = 2^(3+5)

    Thanks
    Manoj


  17. #37
    Expert Member
    Join Date
    Jan 2007
    Answers
    272

    Re: Power

    i knew dat atleast manoj will support me..i was waiting for u only!!!


  18. #38
    Expert Member
    Join Date
    Jan 2007
    Answers
    272

    Re: Power

    i think my this problem wud hve cleared basic mathematics concepts of many viewers!!
    dats y i put this in!!


  19. #39
    Contributing Member
    Join Date
    Oct 2006
    Answers
    67

    Re: Power

    Quote Originally Posted by smart_coder View Post
    For u anushya:
    u can c many problems when brackets are not applied but d meaning is applied like the following examples:

    --4
    -3
    2
    this is not equal to

    -12
    2


    u cannot multiply the powers until the brackets are told explicitly..
    S, i accept, until and unless the brackets are explicitly mentioned we cannot do like that. i just mentioned that i (many of us) may know these concepts only - bottom to top. i accept (2^3)^4 = 2^12 and 8^4.
    We eagerly wants to know that top to bottom concepts working process for 2^3^4 (no brackets). thats it.
    Fine,...let me listen ur follow ups which is fine for me.

    **********
    with Thanks and Regards,
    [B][I][COLOR="DarkRed"]Anushya.G[/COLOR][/I][/B]:)
    **********

  20. #40
    Expert Member
    Join Date
    Jan 2007
    Answers
    272

    Re: Power

    What more you want to know anushya??
    what more working process??
    the process is simple
    just TOP to BOTTOM!!!
    dats it!!
    feel free to ask more!!



Page 2 of 3 FirstFirst 123 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
About us
Applying for a job can be a stressful and frustrating experience, especially for someone who has never done it before. Considering that you are competing for the position with a at least a dozen other applicants, it is imperative that you thoroughly prepare for the job interview, in order to stand a good chance of getting hired. That's where GeekInterview can help.
Interact