No products in the cart.

Ask questions which are clear, concise and easy to understand.

Ask Question
  • 3 answers

Nancy Rajput 7 years ago

thank u so much ??

Gaurav Seth 7 years ago

<header data-role="header" data-sticky="true" id="header">

a) The number of ways in which at least two of them are in the wrong envelopes

</header>

=15+40+135+264+265

=719

 

b) The number of ways in which all letters be placed in the wrong envelopes

= 6! ()

=720

=720()

=360-120+30-6+1

=265

Nancy Rajput 7 years ago

pls its urgent answer this
  • 3 answers

Akina Chishi♥ 6 years, 11 months ago

@yakshi? thank u❤

Yakshi ? 7 years ago

There is a formula for the infinite sum of a g.p. i.e. a1 / (1-r)........infinite ka sum tabhi nikala jaa sakta hai jab.......r(ratio) '1' se less aur '0' se greater ho....... iss.......question mein b 'r' '1' se less hai........ratio= 2nd term divided by 1st term.........or 3rd term divided by 2nd term .......so here ratio is equal to 1/3......... and a1 is the first term i.e. 1. ........now put the values in the formula

Akina Chishi♥ 7 years ago

Can someone pls help ans. (!)
  • 1 answers

Aman Kumar 7 years ago

U may get this in this app
  • 5 answers

Yakshi ? 7 years ago

Mai toh khuddh confuse thi....??? well....u r most welcome...

Aman Kumar 7 years ago

Yaah..its √72 ...ur answer is correct...thanks for correcting me?

Yakshi ? 7 years ago

Aman i think answer under root 72 aana chahiye.....plz mujhey btana agar mera answer galat hai toh

Yakshi ? 7 years ago

Acc. To distance formula......._/ (x2 - x1) ^2 + ( y2-y1)^2.........here ......as given p(6, -6) and second points will be (0,0).....as it is from origin......now let (x1,y1) as (6,-6)....and (x2,y2) as (0,0).....and put the values in formula.......what u will get is.... _/ 72.......

Aman Kumar 7 years ago

Is the answer is 72...
  • 1 answers

Yakshi ? 7 years ago

Prakhar....???
  • 2 answers

Aman Kumar 7 years ago

Hope this helps

Aman Kumar 7 years ago

9×8×7×6×5!/5!×3×2×1.....=> 504....
  • 1 answers

Ram Kushwah 7 years ago

18 rev =18×2π=36π rad     in 60 sec

So in 1 sec angle moved

=36π/60=3/5π radians

  • 0 answers
  • 2 answers

Ankit Singh 7 years ago

Nice Priya
Misscelaneous solved and unsolved example and 10.3 exercise is important, then solved example
  • 1 answers

Aryan Garg 7 years ago

General equation of the circle is the equation which can be used for any circle ..but for ease of solving question we are using the equation in which we can find the the equation by just putting the circle's centre and radius..
  • 0 answers
  • 0 answers
  • 2 answers

Ankit Singh 7 years ago

Thanks Priya
The standard equation for an ellipse, x^2 / a^2 + y^2 / b^2 = 1
  • 1 answers
Lim x tends to 0
  • 7 answers

Ankit Singh 7 years ago

That's good ??

Yakshi ? 7 years ago

Oh haa.....mainey b abi notice kiya....???

Ankit Singh 7 years ago

Dhyan se dekhiye Dev kumar ke answer Ko kya aapko kuch fark dikh rha hai aapke answer me aar uske answer me ???

Yakshi ? 7 years ago

Hum teeno ne ek e answer diya hai......vaisey......ek e answer sufficient tah

Ankit Singh 7 years ago

-2 cosec^x.cot x

Dev ..... 7 years ago

-2cosec^2.x . Cotx

Yakshi ? 7 years ago

-2cosec^x . cotx
  • 2 answers

Gaurav Seth 7 years ago

Let Ф = π/8
2Ф = π/4   

tan 2Ф = 1  = 2 tan Ф / [ 1 - tan² Ф ] 

1  - tan² Ф = 2 tan Ф

tan² Ф + 2 tan Ф - 1 = 0

tan Ф  =  1/2 [ -2 +- √(4 +4) ]  = -1 +- √2 

tan π/8 is > 0 So,  tan π/8 = √2 - 1

Aditya Wagh 7 years ago

2-√3
  • 4 answers

Gauri Singhal 6 years, 11 months ago

Correct ans. Is infinity!!

Dev ..... 7 years ago

Arunendra bhai kaha se maths padh rahe ho........x/0 = not defined...so we will not somve this question directly putting value of x

Ashutosh Singh 7 years ago

1

Harsh Mishra 7 years ago

May Be!!!!!!! Gauri, from My View the answer will be "zero", cause by calculation We get :--- -1/0 = 0. ?????

myCBSEguide App

myCBSEguide

Trusted by 1 Crore+ Students

Test Generator

Test Generator

Create papers online. It's FREE.

CUET Mock Tests

CUET Mock Tests

75,000+ questions to practice only on myCBSEguide app

Download myCBSEguide App