We use cookie files to improve site functionality and personalisation. By continuing to use HUKD, you accept our cookie and privacy policy.
Close

The JFK's 'Financial Advice' Thread

The JFKThe JFK

In this thread I will offer free* financial advice.

Ask away.

*It may not be free.

HTH.



Wow, 300 replies+
JFK runnin' the misk.

All Comments (307)

Jump to unreadLocked
1
    dog_cop
    how much pocket money did your mum give you this week .. no hate
    magicbeans
    whats the best type of mortgage.
    boothy
    should I diversify my portfolio
    massmail666
    can i claim my bank charges back from martin lewis?
    micoo
    micoo4 years, 11 months ago #5Show comment tools Reply
    know anything about demand elasticity?
    black gerbil1
    good thread mate, you invested in anything lately? I brought 35k worth of steel as a future investment.
    snowtiger
    Well what I need to know is if a 9 digit number consists of each digit from 1 to 9 and the 9 digit number is divisible by 9. If you remove the rightmost digit, the remaining 8 digit number will be divisible by eight. If you remove the next rightmost digit, the remaining 7 digit number will be divisible by 7. If you remove the next rightmost digit, the remaining 6 digit number will be divisible by 6. This process continues to one. What is the original nine-digit number?
    WantOne
    what exactly is a hedge fund?
    black gerbil1
    snowtiger
    Well what I need to know is if a 9 digit number consists of each digit from 1 to 9 and the 9 digit number is divisible by 9. If you remove the rightmost digit, the remaining 8 digit number will be divisible by eight. If you remove the next rightmost digit, the remaining 7 digit number will be divisible by 7. If you remove the next rightmost digit, the remaining 6 digit number will be divisible by 6. This process continues to one. What is the original nine-digit number?


    let the first digit be a1, second a2 . . .
    1) You know a2, a4, a6 and a8 are even
    2) So you know a1, a3, a5, a7 and a9 are odd.

    3) You know a5 = 5.

    Now because of 2), you know 4 divides 10 * a3 +a5. So a4 is 2 or 6. Similarly, a8 is 2 or 6. So a2 is 4 or 8 and a6 is 4 or 8.

    3 divides 100* a7 + 10 * a8 + a9 (why?) and from this you can deduce a7 is 3, 7 or 9 (not 1).

    3 divides 100* a4 + 10 * a5 + a6 (why) so those numbers are
    258 or 654

    Playing around you get the first three numbers (a1-a3) are one of
    147
    381
    387
    741
    783
    789
    981
    987

    the second three are one of
    258
    654

    The final three are
    321
    327
    723
    729
    963

    Now since these numbers have to be unique, (one of each) you can eliminate some of them. For example, the first three cannot be 387 (why) or 783 (why)

    So picking combination where we do not have repeats, the possible numbers are
    147258963 (fails division by 7)
    381654729
    741258963 (fails division by 7)
    789654321 (fails division by 7)
    981654327 (fails division by 7)
    987654321 (fails division by 7)

    So the answer is 381654729



    HTH
    transit
    Will i become a millionaire by putting a pair of tights over my head and walking into a bank holding a water pistol?
    The JFK
    dog_cop
    how much pocket money did your mum give you this week .. no hate

    [COLOR="Red"]
    I don't get pocket money.

    I did earn £6K this week though.[/COLOR]
    Redking
    magicbeans
    WantOne
    what exactly is a hedge fund?


    plus one
    krazie2004
    snowtiger
    Well what I need to know is if a 9 digit number consists of each digit from 1 to 9 and the 9 digit number is divisible by 9. If you remove the rightmost digit, the remaining 8 digit number will be divisible by eight. If you remove the next rightmost digit, the remaining 7 digit number will be divisible by 7. If you remove the next rightmost digit, the remaining 6 digit number will be divisible by 6. This process continues to one. What is the original nine-digit number?


    123456789?
    The JFK
    magicbeans
    whats the best type of mortgage.


    [COLOR="Red"]Depends on your income, the amount of money you have, the value of the property etc.[/COLOR]
    faevilangel
    black gerbil1




    Copy and pasted, cos you can't type that quick and answer it that quick :p
    dog_cop
    The JFK;6699266

    [COLOR=red]I don't get pocket money.[/COLOR]

    [COLOR=red]I did earn £6K this week though.[/COLOR]

    6k is that all .. I made that in 24hrs .. pulled in 50k this week :thumbsup:
    The JFK
    boothy
    should I diversify my portfolio


    [COLOR="Red"]Depends.[/COLOR]
    micoo
    black gerbil1
    let the first digit be a1, second a2 . . .
    1) You know a2, a4, a6 and a8 are even
    2) So you know a1, a3, a5, a7 and a9 are odd.

    3) You know a5 = 5.

    Now because of 2), you know 4 divides 10 * a3 +a5. So a4 is 2 or 6. Similarly, a8 is 2 or 6. So a2 is 4 or 8 and a6 is 4 or 8.

    3 divides 100* a7 + 10 * a8 + a9 (why?) and from this you can deduce a7 is 3, 7 or 9 (not 1).

    3 divides 100* a4 + 10 * a5 + a6 (why) so those numbers are
    258 or 654

    Playing around you get the first three numbers (a1-a3) are one of
    147
    381
    387
    741
    783
    789
    981
    987

    the second three are one of
    258
    654

    The final three are
    321
    327
    723
    729
    963

    Now since these numbers have to be unique, (one of each) you can eliminate some of them. For example, the first three cannot be 387 (why) or 783 (why)

    So picking combination where we do not have repeats, the possible numbers are
    147258963 (fails division by 7)
    381654729
    741258963 (fails division by 7)
    789654321 (fails division by 7)
    981654327 (fails division by 7)
    987654321 (fails division by 7)

    So the answer is 381654729



    HTH


    Google is definately your friend :lol:
    The JFK
    massmail666
    can i claim my bank charges back from martin lewis?


    [COLOR="Red"]No.[/COLOR]

Post a Comment

No more comments can be posted to this thread.
I Approve
Your Comments On This Post
Comment Preview
Close

PRIVATE MESSAGE

Close
Sorry, you can’t currently send PMs. Once you’re a more active member of the forum, the PM service will be unlocked for you.
Welcome to HUKD!
Close
Join the Community