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    • Posted by Shivendra Pandey 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Iram Hasan Hasan 6 years, 2 months ago

    5th rank

    0Thank You

    ANSWER

    • Posted by Shivendra Pandey 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Shahanur Ali 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 2 answers

    Sandeep Kumar 6 years, 2 months ago

    5(1,11,111+...+ n) 5/9(9+99+999+...+n) 5/9(10-1+100-1+1000-1+...+n) 5/9(10+100+1000+...+(-1)^n) because 10 +100+1000 are in GP so,we are using the formula of sum of GP. 5/9{10(10^n-1/9)+(-1)^n}

    0Thank You

    Jigar Jat 6 years, 2 months ago

    5/81(10×(10^n-1)-9n)

    0Thank You

    ANSWER

    • Posted by Nandhini Nandhini 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 2 answers

    Rishi Singh 6 years, 2 months ago

    No. greater than 56000 will be . We have to fix 56 then there are three no. Left so 1×1×1×2×3=6.So,there are 6 ways

    2Thank You

    Diksha Shishodia 6 years, 2 months ago

    Answer

    6Thank You

    ANSWER

    • Posted by Miss Lj Jain 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 2 answers

    Sachin Tiwari 6 years, 2 months ago

    1&2qudrant

    0Thank You

    Jigar Jat 6 years, 2 months ago

    (-1,4)

    2Thank You

    ANSWER

    • Posted by Suraj Kumar Singh 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Mausam Sharma 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Adarsh Pandey 6 years, 2 months ago

    b^2=a^2 (1-e^2) b =semi minor axis a=semi major axis e= eccentricity

    1Thank You

    ANSWER

    • Posted by Anuj Yadav 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 4 answers

    Rajeev Choudhary 6 years, 2 months ago

    0.875

    1Thank You

    Santosh Sharma 6 years, 2 months ago

    0.875

    0Thank You

    Miss Lj Jain 6 years, 2 months ago

    0.875

    0Thank You

    Danger Lion 6 years, 2 months ago

    0.8

    0Thank You

    ANSWER

    • Posted by Hemant Das 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Divyansh Gupta 6 years, 2 months ago

    Bohat hard

    3Thank You

    ANSWER

    • Posted by Bhavika Chandra 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Divyanshi Nagpal 6 years, 2 months ago

    -1+1/i+2 1-i

    0Thank You

    ANSWER

    • Posted by Ayush Tanwar 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Ankit Kumar 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Unique Girl.. ? 6 years, 2 months ago

    Hey

    1Thank You

    ANSWER

    • Posted by Aman Jaiswal 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 2 answers

    Sandeep Kumar 6 years, 2 months ago

    Domain [5,1/0) Range [0,5]

    1Thank You

    Ankit Kumar 5 years, 5 months ago

    Chapter 5

    1Thank You

    ANSWER

    • Posted by Nakshatra Jindagal 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 3 answers

    Harender Singh 6 years, 2 months ago

    Modulus is root of real part +cofficent of imaginary part . Here real part is -1and cofficent of imaginary part is 1.So modulus is root 2

    0Thank You

    Mukul Mittal 6 years, 2 months ago

    √2

    0Thank You

    Bharat Katariya 6 years, 2 months ago

    Root 2

    0Thank You

    ANSWER

    • Posted by ?????? ???? . 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 2 answers

    Shailesh Kumar 6 years, 2 months ago

    All real number

    0Thank You

    Angel James 6 years, 2 months ago

    f(x) = - (x) one time positve x f(x) = - x or f(x) = -(-x) one time negative x f(x) = + x

    3Thank You

    ANSWER

    • Posted by Mayank Arya 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Santosh Sharma 6 years, 2 months ago

    LHS Two/Ten =wo/en Acc. To alphabetical order 23+15/5+14=38/19 = 2 Hence 2/10=2

    0Thank You

    ANSWER

    • Posted by Khushi Kesharwani 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Mohit Meena 6 years, 2 months ago

    Use of brain

    0Thank You

    ANSWER

    • Posted by Devang Gupta 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Ramakant??? 8306360538 6 years, 2 months ago

    10×9!/2!2!3! =10×9*8*7*6*5*4*3!/2*1*2*1*3! =151200

    1Thank You

    ANSWER

    • Posted by Vijayant Talwar 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Khushi Kesharwani 6 years, 2 months ago

    nCr=nCn-r nC8=nCn-2 8=n-2 n=10 nCr=n!/(n-r)! r! 10C2=10!/(10-2)!2!=10*9*8!/8!*2*1=10*9/2=45

    1Thank You

    ANSWER

    • Posted by ?????? ???? . 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 3 answers

    Miss Lj Jain 6 years, 2 months ago

    6

    2Thank You

    Harsh Mishra 6 years, 2 months ago

    Nice Art @▀▄▀▄▀▄ Ђάmmάⓓ Kђάη ▄▀▄▀▄▀ .

    3Thank You

    Mukul Mittal 6 years, 2 months ago

    6.

    1Thank You

    ANSWER

    • Posted by Sarfarz Khan 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 2 answers

    Miss Lj Jain 6 years, 2 months ago

    572.7

    0Thank You

    Mukul Mittal 6 years, 2 months ago

    572.958 degree U can convert it also in minute and second.

    0Thank You

    ANSWER

    • Posted by Ganesan Lakshman 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Mukul Mittal 6 years, 2 months ago

    30,000

    0Thank You

    ANSWER

    • Posted by Abu Umama 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Abu Umama 6 years, 2 months ago

    my answer is x^2+cosx

    1Thank You

    ANSWER

    • Posted by Varjot Singh Jot 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Mohit Meena 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Raju Kumar 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Avinash Thakur 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Santhosh Deepanathan 6 years, 2 months ago

    Use calculator

    0Thank You

    ANSWER

    • Posted by Raj Veer 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Osinam Tedo 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 2 answers

    Ritika Goyal 6 years, 2 months ago

    You can find it by nC2-n for ex. 8C2-8

    1Thank You

    Jatin Dahiya 6 years, 2 months ago

    From one point we can draw 5 diagonals and an octagon has 8 points therefore we can draw 8*5 = 40 diagonals

    0Thank You

    ANSWER

    • Posted by Manish Kumar 6 years, 2 months ago

    CBSE > Class 11 > Mathematics
    • 1 answers

    Gaurav Seth 6 years, 2 months ago

    Ans:

    (n+1)! / r! ( n-r+1)!

     

     

    To prove

    n! / r!(n-r)! + n! / (r-1)! (n-r+1)! = (n+1)! / r!(n-r+1)!

    L.H.S

    n! / (r)(r-1)! (n-r)! +n! / (r-1)! (n-r+1)(n-r)!

    n! / (r-1)! (n-r)! will be common

    so,

    n! / (r-1)! (n-r)! *[ 1/r  +  1/(n-r+1) ]

    n! / (r-1)! (n-r)! *[ n-r+1+r / nr-r2 +r ]

    we will get ,

    n! / (r-1)! (n-r)! / * [n+1 / r(n-r+1)]

    (n!) (n+1) / (r-1)! (r) (n-r)! (n-r+1)

    (n+1)! / r! ( n-r+1)!

    1Thank You

    ANSWER

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