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  1. H

    Mathematics: Post your doubts here!

    THANXX A MIllion tyms.........solved it 10 times........bt neva complete;y undrstoood thats y did mistake every time......absolutely loved that words............"To ensure Mrs Lin behind a student, group her and one student together as a unit. (Note that she cannot switch the seats with that...
  2. H

    Mathematics: Post your doubts here!

    LAST PRT (V)
  3. H

    Mathematics: Post your doubts here!

    cnt find. sorry
  4. H

    Mathematics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20%289709%29/9709_w11_qp_63.pdf q2 Khan_971
  5. H

    how was chem. p5

    yea ....no....i also dint ......
  6. H

    Mathematics: Post your doubts here!

    help
  7. H

    Mathematics: Post your doubts here!

    dint undrstnd......it has nth to wid dat
  8. H

    Mathematics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20%289709%29/9709_w11_qp_62.pdf 3 b....why we are multiplying 7!/3! with 2
  9. H

    Mathematics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s11_qp_62.pdf now due to premature rounding by markscheme ....m nt getting exactly maching anser in 6 ii
  10. H

    Mathematics: Post your doubts here!

    why its 1-100 and not 0-100?
  11. H

    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 q6 part 4 .....how do i calculate midclass values
  12. H

    how was chem. p5

    well did u ensure gas collected at 25 degrees....cos many students like me dint do that....nd was it necessary
  13. H

    how was chem. p5

    well did u guyx ensure gas was collected at 25 degree celsius???
  14. H

    how was chem. p5

    yea jux one problemmmm........i dint ensure gas was collected at 25 degree celsius
  15. H

    Chemistry P4| A2 only

    To improve soil ‘quality’ by precipitating clays???? zishi
  16. H

    Chemistry P4| A2 only

    Explain why the enzyme lysozyme, which consists of 129 amino acid residues, requires a triplet code of 393 bases.. ms says 129*3=387 this leaves 3 bases for start codn and 3 for stop.............bt the problem here is...that ok stop codon ....there is no amino acid corresponding to it....bt...
  17. H

    Chemistry P4| A2 only

    i dint understand tyhe second point ....zsihi thats why i askked
  18. H

    Chemistry P4| A2 only

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_y07_sp_4.pdf Q2 C (ii) ++++ Give two reasons why lime is used in agriculture.
  19. H

    Chemistry P4| A2 only

    anser?
  20. H

    Chemistry P4| A2 only

    well but will not a feso4 solution get oxidised if lleft in air like an apple goes brown.....chek it urself.....fe3+/fe2+ equilibrium has +.77 whereas an oxygen equilibrium will have a more positive e naught value
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