18. Let \( A \) be the set of 4 -digit numbers \( a_{1} a_{2} a_{3} a_{4} \) where \( a_{1}>a...

Channel:
PW Solutions
Subscribers:
447,000
Published on ● Video Link: https://www.youtube.com/watch?v=Mu0if7TufpM


Duration: 3:57
13 views
0

18. Let \( A \) be the set of 4 -digit numbers \( a_{1} a_{2} a_{3} a_{4} \) where \( a_{1}>a_{2}>a_{3}>a_{4} \) then  \( n(A) \) is equal to
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live



Other Videos By PW Solutions


2023-06-26Which of the following statement is true  (a) Molarity is the no. of moles of solute dissol...
2023-06-26Write the atomic number of the element present in the third period and seventeenth group of the ...
2023-06-26The range of the function \( y=\log _{3}\left(5+4 x-x^{2}\right) \) is
2023-06-26If the middle term in the expansion of \( \left(x^{2}+\frac{1}{x}\right)^{n} \) is \( 924 x^{6} ...
2023-06-26Factorise \[10 a(2 p+q)^{3}-15 b(2 p+q)^{2}+35(2 p+q)\]
2023-06-26\(x=\frac{1}{\sqrt{2-\sqrt 3}}\) and \(y=\frac{1}{\sqrt{2+\sqrt 3}}\) then the value of \((x-y)^...
2023-06-26Discuss the continuity and differentiability of function \( f(x)=|x|+|x-1| \) in the interval \(...
2023-06-26Prove the identities. \[\frac{\tan ^{3} \theta}{1+\tan ^{2} \theta}+\frac{\cot ^{3} \theta}{1+\c...
2023-06-26What number must be added to each of the numbers \( 15,17,34 \) and 38 to make them proportional?
2023-06-26Find all points of discontinuity of \( f \), where \[f(x)=\left\{\begin{array}{l}\frac{\sin x}{x...
2023-06-2618. Let \( A \) be the set of 4 -digit numbers \( a_{1} a_{2} a_{3} a_{4} \) where \( a_{1}>a...
2023-06-26The value of the expression \[\begin{array}{l}\sin ^{-1}\left(\sin \frac{22 \pi}{7}\right)+\cos ...
2023-06-26\( \cos (A+B)+\sin (A-B)=2 \sin \left(45^{\circ}+A\right) \cos \left(45^{\circ}+B\right) \)
2023-06-26With the help of which of the following will you describe the position of a pen on a table?
2023-06-26The sum to infinity of the series \( 1+\frac{2}{3}+\frac{6}{3^{2}}+\frac{10}{3^{3}}+\frac{14}{3^...
2023-06-26The number of solutions of the equation \( 1+\sin ^{4} x= \) \( \cos ^{2} 3 \mathrm{x}, \mathrm{...
2023-06-26Five kingdom system of classification suggested by R.H. Whittaker is not based on
2023-06-26Five kingdom system of classification suggested by R.H. Whittaker is not based on : (a) Presence...
2023-06-26math xmlns=http://www.w3.org/1998/Math/MathMLmn70/mnmo /momi mathvariant=normalS/mi/math ty...
2023-06-26Expand ICZN
2023-06-26A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of t...