There are 7 boys in a class of 20. Find the number of way...
There are 7 boys in a class of 20. Find the number of ways of selecting 3 girls and 2 boys
1638
2730
6006
7520
Correct answer is C
No of boys in the class = 7; Girls = 20-7 = 13
No of selection = \(^{13}C_{3} \times ^{7}C_{2} = \frac{13!}{(13-3)!3!} \times \frac{7!}{(7-2)!2!}\)
= \(286\times21 = 6006\)
Simplify \(\frac{1}{(1-\sqrt{3})^{2}}\)...
If \(V = \begin{pmatrix} -2 \\ 4 \end{pmatrix}\) and \(U = \begin{pmatrix} ...
Find the radius of the circle 2x\(^2\) - 4x + 2y\(^2\) - 6y -2 = 0. ...
Which of the following is not an equation of a circle? ...
The table shows the distribution of marks obtained by some students in a test Marks 0-9 10-...
A fair die is tossed 60 times and the results are recorded in the table Number of die 1 2 ...
Find the stationary point of the curve \(y = 3x^{2} - 2x^{3}\)....
Given the statements: p : the subject is difficult q : I will do my best Which of the follo...
Given that \(a = i - 3j\) and \(b = -2i + 5j\) and \(c = 3i - j\), calculate \(|a - b + c|\)....