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  1. S

    Mathematics: Post your doubts here!

    OH right. thanksss :)
  2. S

    Mathematics: Post your doubts here!

    yeah i know that much.. that leaves us with -a//root21 <Z < a/root21 = 0.5 what to do after that! i dont understand how ms got 0.75..
  3. S

    Mathematics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s11_qp_61.pdf Q6 iv..:S also in part i..why"d we plot upper class boundaries..i means the sign says greater than or equal to..so shudnt we plot that value like 100, 150 and so on?
  4. S

    Mathematics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s11_qp_61.pdf Q5 b..no idea what to do in this one!!
  5. S

    Mathematics: Post your doubts here!

    YAYYY I GOT IT :D thankss !
  6. S

    Mathematics: Post your doubts here!

    can you plz check if my tree diagram is right..not getting the ans still..
  7. S

    Mathematics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s11_qp_61.pdf Q3..plz tell me how do we calculate other values of probabilitty of x?
  8. S

    Mathematics: Post your doubts here!

    GUYS. come on. some help would be highly appreciated. i"ve posted so many queries..plz answer..paper tomorrow!!
  9. S

    Mathematics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w11_qp_61.pdf Q6..a ii.. why dont we do 4! x 8! x 6 /2! x 2! x 3! 4! for the vowels..8! for the rest and 6 because the vowels(that we consider as 1 group of 4) can occupy any place right?
  10. S

    Mathematics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w11_qp_61.pdf Q3i..how d owe get the probability table? as in i dont knw how to get the probabilites..i dont understand ms method..
  11. S

    Chemistry P4| A2 only

    uh okay. sorry :/
  12. S

    Mathematics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w11_qp_62.pdf Q6!! part ii
  13. S

    Chemistry P4| A2 only

    umm..i dont get it.. the way i do it is that we keep the conc of all other except the one whose order we are finding constant. why are you using .16/.1? :S
  14. S

    Mathematics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w11_qp_62.pdf Q1.im getting 7.95..are any of you getting the same answer as marking scheme which is 7.68..idk where im going wrong in this one! also Q4 ii of the same paper! how do we do it????
  15. S

    Chemistry P4| A2 only

    EXACTLY. i"ve asked this question so many times. no one replied :(
  16. S

    Mathematics: Post your doubts here!

    umm i think because 2 G"s can be placed before the 7 letters or after them..
  17. S

    Mathematics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w11_qp_63.pdf Q2 and 3..explain plz
  18. S

    Chemistry: Post your doubts here!

    umm so what abt fluorine..its E0 value isnt given in the data booklet.
  19. S

    Chemistry P4| A2 only

    http://www.xtremepapers.com/papers/... AS Level/Chemistry (9701)/9701_s11_qp_43.pdf Q3c..plz tell me how do we dedude the products??
  20. S

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s11_qp_43.pdf Q3c..plz tell me how do we dedude the products??
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