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Countdown continued

  • 06-10-2016 9:10pm
    #1
    MathsManiac
    Registered Users, Registered Users 2 Posts: 1,595 ✭✭✭MathsManiac


    Last thread was almost at the 10,000 post limit, so had to be locked.

    Off you go again.

    Courtesy of Niska:

    ============

    1 4 6 7 10 25

    409


«134567…160

Comments

  • #2
    Ted_YNWA
    Registered Users, Registered Users 2 Posts: 71,799 ✭✭✭✭Ted_YNWA


    MathsManiac wrote: »
    Last thread was almost at the 10,000 post limit, so had to be locked.

    Off you go again.

    Courtesy of Niska:

    ============

    1 4 6 7 10 25

    409

    =(10 + 6) * (25 + 1) - 7

    =16 * 26 -7

    =416 - 7

    =409

    2, 3, 5, 7, 9, 75

    417


  • #3
    Rob Thomas
    Registered Users, Registered Users 2 Posts: 488 ✭✭Rob Thomas


    MathsManiac wrote: »
    Last thread was almost at the 10,000 post limit, so had to be locked.

    Off you go again.

    Courtesy of Niska:

    ============

    1 4 6 7 10 25

    409

    10+6=16
    25+1=26
    16x26=416
    416-7=409


  • #4
    Ciaran
    Registered Users, Registered Users 2 Posts: 917 ✭✭✭Ciaran


    Ted_YNWA wrote: »
    2, 3, 5, 7, 9, 75

    417

    5*75 = 375
    2*3*7 = 42

    375 + 42 = 417



    2 5 7 8 25 50
    643


  • #5
    KeithTS
    Registered Users, Registered Users 2 Posts: 743 ✭✭✭KeithTS


    Ciaran wrote: »

    2 5 7 8 25 50
    643

    (8+5) * 50 - 7 = 643

    75 100 7 1 1 6
    120


  • #6
    Yakuza
    Registered Users, Registered Users 2 Posts: 5,141 ✭✭✭Yakuza


    KeithTS wrote: »
    (8+5) * 50 - 7 = 643

    75 100 7 1 1 6
    120

    (100-75-7+1+1) * 6 = 120

    1, 3, 5, 7, 8, 75 ---> 423


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  • #7
    tobsey
    Registered Users, Registered Users 2 Posts: 1,275 ✭✭✭tobsey


    Yakuza wrote: »
    (100-75-7+1+1) * 6 = 120

    1, 3, 5, 7, 8, 75 ---> 423

    (7-5) x 75 =150
    150-8-1= 141
    141 x 3 = 423

    2 4 5 6 9 25 --> 642


  • #8
    GTTDI GOD
    Registered Users Posts: 1,097 ✭✭✭GTTDI GOD


    tobsey wrote: »
    2 4 5 6 9 25 --> 642

    25 * 4 + 5 + 2 = 107 * 6 = 642

    2, 5, 6, 7, 9, 10
    489


  • #9
    Pherekydes
    Registered Users, Registered Users 2 Posts: 16,190 ✭✭✭✭Pherekydes


    GTTDI GOD wrote: »
    2, 5, 6, 7, 9, 10
    489

    (9-2)*7*10-6+5= 489

    T: 472

    100, 50, 10, 10, 4, 3


  • #10
    alchemist33
    Registered Users, Registered Users 2 Posts: 10,969 ✭✭✭✭alchemist33


    Pherekydes wrote: »
    (9-2)*7*10-6+5= 489

    T: 472

    100, 50, 10, 10, 4, 3

    (4*100) + (3*4) + 10 +50 = 472

    1,4,6,3,75,100 --> 513


  • #11
    Pherekydes
    Registered Users, Registered Users 2 Posts: 16,190 ✭✭✭✭Pherekydes


    alchemist33 wrote: »
    1,4,6,3,75,100 --> 513

    (100+75-4)*3= 513

    T: 546

    50, 10, 10, 8, 3, 1


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  • #12
    GTTDI GOD
    Registered Users Posts: 1,097 ✭✭✭GTTDI GOD


    Pherekydes wrote: »
    T: 546

    50, 10, 10, 8, 3, 1

    10 - 3 = 7
    8 * 7 = 56
    50 - 1 = 49 * 10 = 490
    490 + 56 = 546

    2, 4, 7, 9, 25, 75
    498


  • #13
    Niska
    Registered Users, Registered Users 2 Posts: 2,474 ✭✭✭Niska


    GTTDI GOD wrote: »

    2, 4, 7, 9, 25, 75
    498

    (25 + 75) * (9 - 4) = 500 - 2 = 498

    ==========================

    2 2 5 5 10 50

    717


  • #14
    Pherekydes
    Registered Users, Registered Users 2 Posts: 16,190 ✭✭✭✭Pherekydes


    Niska wrote: »
    2 2 5 5 10 50

    717

    (50-2)*(10+5)-5+2= 717

    T: 666

    50, 7, 7, 5, 3, 2


  • #15
    Niska
    Registered Users, Registered Users 2 Posts: 2,474 ✭✭✭Niska


    Pherekydes wrote: »

    T: 666

    50, 7, 7, 5, 3, 2

    50 * 5 = 250 - ((7 + 7) * 2) [28] = 222
    222 * 3 = 666

    =========================================

    4 5 6 9 50 100

    681


  • #16
    Pherekydes
    Registered Users, Registered Users 2 Posts: 16,190 ✭✭✭✭Pherekydes


    Niska wrote: »
    4 5 6 9 50 100

    681

    100*6+(9*(5+4))= 681

    T: 542

    75, 10, 8, 5, 4, 2


  • #17
    Niska
    Registered Users, Registered Users 2 Posts: 2,474 ✭✭✭Niska


    Pherekydes wrote: »

    T: 542

    75, 10, 8, 5, 4, 2

    (75 * 8) = 600
    (10 * 5) + ( 4* 2) = 58
    600 - 58 = 542

    ============================

    1 3 5 7 8 25

    416


  • #18
    Pherekydes
    Registered Users, Registered Users 2 Posts: 16,190 ✭✭✭✭Pherekydes


    Niska wrote: »
    1 3 5 7 8 25

    416

    (5*3+1)*(25+8-7)= 416

    T: 874

    100, 5, 4, 3, 2, 2


  • #19
    IrishZeus
    Registered Users, Registered Users 2 Posts: 1,887 ✭✭✭IrishZeus


    Pherekydes wrote: »
    T: 874

    100, 5, 4, 3, 2, 2

    (100-3)*(5+4) = 873

    873 + (2/2) = 874

    75 3 3 5 2 1

    T = 719


  • #20
    Yoghurt87
    Registered Users, Registered Users 2 Posts: 460 ✭✭Yoghurt87


    IrishZeus wrote: »

    75 3 3 5 2 1

    T = 719


    (75-3)*5*2=720
    720-1=719



    75 25 4 4 3 7
    T: 363


  • #21
    tobsey
    Registered Users, Registered Users 2 Posts: 1,275 ✭✭✭tobsey


    IrishZeus wrote: »
    (100-3)*(5+4) = 873

    873 + (2/2) = 874

    75 3 3 5 2 1

    T = 719

    (75*2)-3-3 = 144
    (144*5)-1 = 719

    50 9 9 6 4 1
    T: 379


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  • #22
    tobsey
    Registered Users, Registered Users 2 Posts: 1,275 ✭✭✭tobsey


    Yoghurt87 wrote: »
    (75-3)*5*2=720
    720-1=719



    75 25 4 4 3 7
    T: 363

    (75-25+3)*7= 371
    371-4-4 = 363

    Post this again from above:

    50 9 9 6 4 1
    T: 379


  • #23
    Niska
    Registered Users, Registered Users 2 Posts: 2,474 ✭✭✭Niska


    tobsey wrote: »

    50 9 9 6 4 1
    T: 379

    (50 - 9) * 9 = 369 + 4 + 6 = 379



    ======================

    7 7 8 8 10 100

    314


  • #24
    Pherekydes
    Registered Users, Registered Users 2 Posts: 16,190 ✭✭✭✭Pherekydes


    Niska wrote: »
    7 7 8 8 10 100

    314

    (7+7)*(8+8)+100-10= 314

    T: 686

    50, 25, 9, 5, 3, 2


  • #25
    Niska
    Registered Users, Registered Users 2 Posts: 2,474 ✭✭✭Niska


    Pherekydes wrote: »
    T: 686

    50, 25, 9, 5, 3, 2

    (50 + 25) * 9 = 675
    675 +5 + (3 * 2) = 686

    ==============================

    2 6 7 7 8 75

    856


  • #26
    Pherekydes
    Registered Users, Registered Users 2 Posts: 16,190 ✭✭✭✭Pherekydes


    Niska wrote: »
    2 6 7 7 8 75

    856

    (6*75-(8+7+7))*2= 856

    T: 604

    100, 50, 25, 10, 7, 7


  • #27
    tobsey
    Registered Users, Registered Users 2 Posts: 1,275 ✭✭✭tobsey


    Pherekydes wrote: »
    (6*75-(8+7+7))*2= 856

    T: 604

    100, 50, 25, 10, 7, 7

    100 + ((50 + 25 + 7 - 10) * 7) = 604

    T: 665

    50 9 6 4 3 1


  • #28
    Pherekydes
    Registered Users, Registered Users 2 Posts: 16,190 ✭✭✭✭Pherekydes


    tobsey wrote: »
    T: 665

    50 9 6 4 3 1

    (50*(4*3+1))+9+6= 665

    T: 522

    100, 50, 5, 4, 4, 3


  • #29
    tobsey
    Registered Users, Registered Users 2 Posts: 1,275 ✭✭✭tobsey


    Pherekydes wrote: »
    (50*(4*3+1))+9+6= 665

    T: 522

    100, 50, 5, 4, 4, 3
    3*((5*4)+100+50+4) = 522

    T: 837

    100, 25, 7, 7, 6, 4


  • #30
    Pherekydes
    Registered Users, Registered Users 2 Posts: 16,190 ✭✭✭✭Pherekydes


    tobsey wrote: »
    T: 837

    100, 25, 7, 7, 6, 4

    (100+25-6)*7+4= 837

    T: 643

    9, 9, 7, 6, 5, 5


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  • #31
    tobsey
    Registered Users, Registered Users 2 Posts: 1,275 ✭✭✭tobsey


    Pherekydes wrote: »
    (100+25-6)*7+4= 837

    T: 643

    9, 9, 7, 6, 5, 5

    (9*9)*(7+6-5) - 5 = 643

    T: 731

    50 7 7 5 4 1


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