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  1. B

    Mathematics: Post your doubts here!

  2. B

    Mathematics: Post your doubts here!

    matrix are piss easy you dont need a calculator to do it and about the question you posted and again have a look at my signature :)
  3. B

    Mathematics: Post your doubts here!

    sumeameen and you are welcome :) thanks for the prayers i hope i get to achieve world ranking and you too pass with amazing grades insAllah
  4. B

    Mathematics: Post your doubts here!

    you know that the sum of a interior angles of polygon is (n-2)*180 since the ratio of 150 angles to 170 angle is same we can be sure that if we multiply n/2 by their sum we will get the sum of internal angles 180(n-2) = (n/2)*(150+170) 180n-360 = 75n+85n 20n=360 n=18
  5. B

    Mathematics: Post your doubts here!

    i think we need to draw loci of the path from D to D', otherwise the question make no sense to me since loci refers to points that lie on the given statements i drew a solid line does captain check this thread anymore? if so may be he can explain
  6. B

    Mathematics: Post your doubts here!

    check freexampapers i think they have compilation from 1990s to 2002 and post a screen shot
  7. B

    Mathematics: Post your doubts here!

    i dont have summer 11 paper printed so i ll explain since the base is same take the powers p-5=1/2 p=5.5 question 5 24* 3600(seconds in 1 hour)=86400 part b is just standard form so 8.64 *10power4
  8. B

    Mathematics: Post your doubts here!

    yeah i checked marks scheme that why i was wondering
  9. B

    Mathematics: Post your doubts here!

    would be better if you post the paper and the question number
  10. B

    Mathematics: Post your doubts here!

    i was going to answer it but too many caps in a single post -_-
  11. B

    Mathematics: Post your doubts here!

    any idea why he used doted line here? from the link u posted when i did this question i joined BD and my loci was a solid line confused :/
  12. B

    Mathematics: Post your doubts here!

    check my working if i have missed something 54/11=4.91 which is not equal to 5
  13. B

    Mathematics: Post your doubts here!

    i know, this was just to show that values fit the given condition
  14. B

    Mathematics: Post your doubts here!

    add me to the list too :D
  15. B

    Mathematics: Post your doubts here!

    since you found the range of values for x in part a they want you to list those values in part b i just gave the working to justify my answer you can just write the answer positive integers less than 4.33 1, 2, 3, 4
  16. B

    Mathematics: Post your doubts here!

    yeah add all the number of elements for set given subtracted but the info given to get the actual number without repetition you subtract this actual value from universal set to get the number of missing values
  17. B

    Mathematics: Post your doubts here!

  18. B

    Mathematics: Post your doubts here!

    i have solved such question before your sir missed a part of question which is something like each student must choose at least 2 subjects you dont need a formula in such case just a over view of what you is given ignore the ven diagram the formula your teacher gave you will only work in this...
  19. B

    Mathematics: Post your doubts here!

    is the answer 10? if so i ll explain the method
  20. B

    Mathematics: Post your doubts here!

    all the papers will start and end at same time so yeah good luck sitting out side for questions :p
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