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This topic contains 132 replies, has 11 voices, and was last updated by  admin 2 years, 2 months ago.

Viewing 15 posts - 31 through 45 (of 133 total)
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  • #1448

    admin
    Member

    A-Level Maths Tuition Singapore/H2 Maths Tuition/JC Maths Tutor

    Hi JC/A-Level Mathematics Tuition Students Singapore

    Hi Wei Ren

    N88/II/6

    a) P(all the four cards are different) = (10x9x8x7)/(10x10x10x10) = 63/125

    b) Since the first three are different. He has 10x9x8 choices. The fourth card is the same as either one of the first 3 cards, therefore he has 3 choices. Althogether he has 10x9x8x3 choices.

    P(exactly 3 different pictures out of a total of four cards) = (10x9x8x3)/10^4 = 27/125

    c) Required probability = 1 – P(all the four cards does not contain X or Y)= 1- (8/10)^4 = 0.591

    d) P(n more cards are needed) (9/10)^n-1 x (1/10)
    P( at most n more cards are needed) = 1/10 + (9/10)(1/10)………..(9/10)^n-1 x (1/10)

    This is sum of GP

    1- (9/10)^n > 099
    n > 43.7

    least value n = 44

    From A level/H2 Maths Tutor

    #1457

    Daniel Tan
    Participant

    Hi Sir,

    How do you solve part (i) of the probability question from 2010 NYJC Prelim/P2/10?

    Thank you

    #1458

    Micole Soh
    Participant

    Hi,

    Can I have the solutions to this Probability question:

    2010 RI(JC) Prelim/P2/6

    Thank you.

    #1498

    admin
    Member

    A-Level Maths Tuition Singapore/H2 Maths Tuition/JC Maths Tutor

    Hi JC/A-Level Mathematics Tuition Students Singapore

    Hi Daniel

    2010 NYJC Prelim/P2/10 solutions posted on the resource page 2010 prelim statistics

    Hi Micole

    2010 RI(JC) Prelim/P2/6 solutions posted on the resource page 2010 prelim statistics

    Cheers! From A-level/JC/H2 Mathematics Tutor

    #1535

    admin
    Member

    A-Level Maths Tuition Singapore/H2 Maths Tuition/JC Maths Tutor

    Hi JC/A-Level Mathematics Tuition Students Singapore

    4 common errors in Normal Distribution

    1) Remember to sq root your variance when using GC
    2) For two independent events, variance is always ADD
    3) 2X + 3Y, remember to square the number 2 and 3 when finding the variance
    4) X1 + X2 + X3, when finding the variane, just add them together

    Cheers!
    From A-level/JC/H2 Mathematics Tutor

    #1537

    admin
    Member

    A-Level Maths Tuition Singapore/H2 Maths Tuition/JC Maths Tutor

    Hi J1 Students

    To find the inverse of y = x – 1/x
    Multiply the equation by x
    xy = x^2 -1
    x^2 – yx – 1 = 0
    using x = -b +- Sq rt( b^2 – 4ac) divide by 2a

    x = y +- sq rt ( y^2 – 4.1.-1) divide by 2
    = y +- sq rt ( y^2 + 4)divide by 2

    Cheers A-Level Math tuition Tutor

    #1569
    #1586

    admin
    Member

    A-Level Maths Tuition Singapore/H2 Maths Tuition/JC Maths Tutor

    Hi All A-Level/JC/H2/H1 Mathematics Students

    Starting 29 May, we are conducting Mathematics Revision Programme.
    Please refer to the Schedule for more detials.

    We can also customise the schedule to suit you

    From
    A-Level/JC/H2/H1 Mathematics Tutors

    #1603

    Soong Zhuo Rong
    Participant

    hi mr. ong, could you send us the solutions for the stats questions? [Probability, binomial&poisson, normal dist & sampling]

    thank you(:

    #1604

    admin
    Member

    A-Level Maths Tuition Singapore/H2 Maths Tuition/JC Maths Tutor

    Hi Zhuo Rong

    Solutions for Probabilty, Bionial Poisson and Normal Distribution, Sampling will send to you by Monday

    Cheers!
    Mr Ong

    #1799

    admin
    Member

    A-Level Maths Tuition Singapore/H2 Maths Tuition/JC Maths Tutor

    Hi All A-Level/JC/H2/H1 Mathematics Students

    We manage to complete Inequilities, Binomial Exp, Mathematical Induction, Graphing and Transformations and Functions last week.

    If you have more questions, please contact the Maths tutors

    Cheers A-Level Math tuition Tutors

    #1804

    admin
    Member

    A-Level Maths Tuition Singapore/H2 Maths Tuition/JC Maths Tutor

    Hi All A-Level/JC/H2 Mathematics Students – June Revision Programme

    Solutions for Example 13 to 18 is uploaded in Mathematics Resources.
    Continue to work hard and work thru the Bank Interest questions

    Cheers!
    Mr Ong – A level Maths Tutor

    #1810

    Loshelle Wang
    Participant

    Request for vectors notes

    #1813

    admin
    Member

    A-Level Maths Tuition Singapore/H2 Maths Tuition/JC Maths Tutor

    Hi Loshelle Wang

    Your request has been send to your email.

    Cheers!
    Mr Ong – A level Maths Tut

    #1820

    Micole Soh
    Participant

    Hi Mr Ong,

    Can you upload the solutions for the Integration questions that you assigned as homework from the revision class today? thank you!

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