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Countdown with sNarah

  • 27-04-2013 12:14am
    #1
    sNarah
    Registered Users, Registered Users 2 Posts: 4,570 ✭✭✭


    In driving from town A to town D you pass through town B and then through town C. It is 10 km farther from town A to B than from town B to C and 10 km farther from B to C than from C to D. How far is it from town A to town B?


Comments

  • #2
    sNarah
    Registered Users, Registered Users 2 Posts: 4,570 ✭✭✭sNarah


    In the following decimal, how many 2’s are there in all before the hundredth 3?

    0.23223222322223……


  • #3
    sNarah
    Registered Users, Registered Users 2 Posts: 4,570 ✭✭✭sNarah


    In the figure below the sum of the numbers on each line are the same. Find x and y.

    November-Question_3.aspx?width=245&height=209


  • #4
    sNarah
    Registered Users, Registered Users 2 Posts: 4,570 ✭✭✭sNarah


    Hilary is having a party. The first time that the doorbell rings, 1 guest enters. The second time 3 guests enter. Thereafter on each successive ring, a group that has 2 more persons than the group that had entered on the previous ring. How many guests in all will have arrived after the twentieth ring?
    Ring number
    Number who enter
    Total number
    1
    1
    1
    2
    3 4 3
    5 9 …


    20




  • #5
    sNarah
    Registered Users, Registered Users 2 Posts: 4,570 ✭✭✭sNarah


    A mathematician states that if one folds a piece of paper in half, and folds it in half again and continues to do this 43 times, the height of the stack of folded paper will be greater than the distance between the earth and the moon. Can you prove it by simple calculation?
    * Notes
    1. This a theoretical question, it would be impossible to physically fold a piece of paper in half and in half again, and so on until you 43 times.
    2. The distance between the earth and the moon is 385 000 km and the thickness of paper is 0.006cm.)

    Guideline for answer.

    Number of folds 1 2 3 4 5 ... ... 42 43 Number of pieces of paper 2


  • #6
    sNarah
    Registered Users, Registered Users 2 Posts: 4,570 ✭✭✭sNarah


    A target for archery is designed with 4 different regions of the same area and each circle has the same centre as shown in the figure below. If the radius of the red region is 10cm, find the width of each region correct to one decimal place.
    Maths-Q2.aspx?width=280&height=252


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  • #7
    sNarah
    Registered Users, Registered Users 2 Posts: 4,570 ✭✭✭sNarah


    The following figure shows the dimensions of a lift. What is the longest possible length of a stick that can be put inside the lift? (Give your answer to the nearest cm). You must show or explain how you found your solution to the answer in the box below.

    February-Question.aspx?width=298&height=260








  • #8
    Sarky
    Closed Accounts Posts: 31,967 ✭✭✭✭Sarky


    You're my favourite. <3


  • #9
    Star Lord
    Registered Users, Registered Users 2 Posts: 30,123 ✭✭✭✭Star Lord


    That's NumberWang!


  • #10
    Sarky
    Closed Accounts Posts: 31,967 ✭✭✭✭Sarky


    Your FACE is Numberwang!


  • #11
    sNarah
    Registered Users, Registered Users 2 Posts: 4,570 ✭✭✭sNarah


    Your mother is a face.


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  • #12
    Hardonraging
    Registered Users, Registered Users 2 Posts: 2,641 ✭✭✭Hardonraging


    This thread gives me a negative erection ..


  • #13
    Sarky
    Closed Accounts Posts: 31,967 ✭✭✭✭Sarky


    Your sadness gives me a positive, exponential one.


  • #14
    sNarah
    Registered Users, Registered Users 2 Posts: 4,570 ✭✭✭sNarah


    I thanked your reply - just because I *can*


  • #15
    Sarky
    Closed Accounts Posts: 31,967 ✭✭✭✭Sarky


    He can count it if it makes anyone feel better. ^_^


  • #16
    sNarah
    Registered Users, Registered Users 2 Posts: 4,570 ✭✭✭sNarah


    16


  • #17
    Sarky
    Closed Accounts Posts: 31,967 ✭✭✭✭Sarky


    ಠ_ಠ


  • #18
    Encrypted Pigeon
    Registered Users, Registered Users 2 Posts: 12,760 ✭✭✭✭Encrypted Pigeon


    14

    Am I doing it right?


  • #19
    sNarah
    Registered Users, Registered Users 2 Posts: 4,570 ✭✭✭sNarah


    Needs 4 more I reckon


  • #20
    Encrypted Pigeon
    Registered Users, Registered Users 2 Posts: 12,760 ✭✭✭✭Encrypted Pigeon


    18

    Gotcha, thanks.


  • #21
    sNarah
    Registered Users, Registered Users 2 Posts: 4,570 ✭✭✭sNarah


    Excellent. Good job. *Pets CoderDozer on the shoulder*

    Now substract 17, square it, double it, add 42 and apply the co-sinus.
    What do you get?


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  • #22
    Star Lord
    Registered Users, Registered Users 2 Posts: 30,123 ✭✭✭✭Star Lord


    Numberwang!


  • #23
    sNarah
    Registered Users, Registered Users 2 Posts: 4,570 ✭✭✭sNarah


    numbertwoo!


  • #24
    TheDB
    Closed Accounts Posts: 43 ✭TheDB


    sNarah wrote: »
    Excellent. Good job. *Pets CoderDozer on the shoulder*

    heh, tone down the touching please


  • #25
    sNarah
    Registered Users, Registered Users 2 Posts: 4,570 ✭✭✭sNarah


    But but but, we are in FlirTar! Touching is mandatory!

    NO TOUCHING WILL RESULT IN A BAN


  • #26
    Star Lord
    Registered Users, Registered Users 2 Posts: 30,123 ✭✭✭✭Star Lord


    h051D095C


  • #27
    sNarah
    Registered Users, Registered Users 2 Posts: 4,570 ✭✭✭sNarah


    Oh thanks Damo ♥
    (I choose to interpret this message as being for me and me alone)


  • #28
    Sarky
    Closed Accounts Posts: 31,967 ✭✭✭✭Sarky


    I encourage this interpretation on the basis that I think Damo smells funny.


  • #29
    Star Lord
    Registered Users, Registered Users 2 Posts: 30,123 ✭✭✭✭Star Lord


    You think right.
    I smear myself with napalm nightly because I like how it makes my skin tingle.


  • #30
    sNarah
    Registered Users, Registered Users 2 Posts: 4,570 ✭✭✭sNarah


    You can come and tingle me!


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  • #31
    Star Lord
    Registered Users, Registered Users 2 Posts: 30,123 ✭✭✭✭Star Lord


    I cannot. Sarky would get jealous and would seek me out and choke me to death with his beard tendrils.


  • #32
    Sarky
    Closed Accounts Posts: 31,967 ✭✭✭✭Sarky


    Tingle away, I got caught in a bizarre-yet-erotic love triangle with an old lady and her fifteen cats.


  • #33
    Star Lord
    Registered Users, Registered Users 2 Posts: 30,123 ✭✭✭✭Star Lord


    Fifteen cats you say?
    That sounds less like a love triangle, and more like a love pyramid scheme. Have you checked where your investments are being channelled?


  • #34
    Sarky
    Closed Accounts Posts: 31,967 ✭✭✭✭Sarky


    I'll channel YOUR investments!



    Give me a call, my rates are competitive and I can reduce your taxes by 20% guaranteed.


  • #35
    neil_
    Registered Users Posts: 274 ✭✭neil_


    (3[distance from C to D] +30)km

    5050

    x = 14, y = 3

    400

    .06mm x (2^43) = 527765.6km > 385000km

    Blue = 4.1cm, Green = 3.2cm, Yellow = 2.7cm

    Length = √(120² + 240²) = 268cm


  • #36
    Star Lord
    Registered Users, Registered Users 2 Posts: 30,123 ✭✭✭✭Star Lord


    That there looks mighty like countin' to me!

    I'mma get me a mob with pitchforks and torches!


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  • #37
    Tar.Aldarion
    Moderators, Science, Health & Environment Moderators, Social & Fun Moderators, Society & Culture Moderators Posts: 60,104 Mod ✭✭✭✭Tar.Aldarion


    neil_ wrote: »
    (3[distance from C to D] +30)km

    5050

    x = 14, y = 3

    400

    .06mm x (2^43) = 527765.6km > 385000km

    Blue = 4.1cm, Green = 3.2cm, Yellow = 2.7cm

    Length = √(120² + 240²) = 268cm

    come play games


  • #38
    Star Lord
    Registered Users, Registered Users 2 Posts: 30,123 ✭✭✭✭Star Lord


    Tar.Aldarion wrote: »
    come play games

    I did.


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