376 Replies to “IGCSE Past Exam Paper Model Answers”

  1. Hello.
    Is there a chance someone can help me with this question .
    A six sided spinner .Amy spins a biased spinner and the probability she gets a two is 5/36.
    Find the probability she
    1/
    A/ does not get a two
    B/ gets a seven
    C/gets a number on the spinner less than 7.
    2/Joel spins his blue spinner 99 times and gets a two 17 times.
    Write down the relative frequency of getting a two with Joel’s spinner .
    3/The relative frequency of getting a two with Pierro’s spinner is 21/102.
    Which of the three spinners Amy’s ,Joel’s or Piero’s, is most likely to give a two ?
    Thank you.

    • Hey!
      The answers are:
      1/a)1-(5/36)
      =36/36 – 5/36 =31/36
      b)*Are you sure the question is complete?*
      c)*Try typing in the entire question as it is.*
      2/ P(2)= 17/99
      3/For this question, try using your calculator to convert each of the fractions to decimals.
      So, for Amy’s spinner: 31/36 =0.861111…
      For Joel’s spinner: 17/99 =0.1717171…
      For Piero’s spinner: 21/102 =0.20588235294….
      From this: Piero’s spinner<Joel's spinner<Amy's spinner (likeliness of giving a 2).
      Hence Amy's spinner is the likeliest to give a 2.

      Hope that helped!

Thank you for your visit! We have got a new site. Please go to our new site Skolatis.com to leave your comments and continue the hot discussions! See you there!