If [2132]\begin{bmatrix} 2 & 1 \\ 3 & 2\end{bmatrix}[2312] A [−325−3]\begin{bmatrix} -3 & 2 \\ 5 & -3\end{bmatrix}[−352−3] =[1001]\begin{bmatrix} 1 & 0 \\ 0 & 1\end{bmatrix}[1001], then A =?
If a and b are two vectors such that Ia⃗\vec {a}aI + Ib⃗\vec {b}bI = 2\sqrt 22 with a⃗\vec {a}a.b⃗\vec {b}b = –1, then the angle between a⃗\vec {a}a and b⃗\vec {b}b is
A round table conference is to be held among 20 countries. If two particular delegates wish to sit together, then such arrangements can be done in __________ways.
The general solution of differential equation e12(dydx)e^{\frac {1}{2} (\frac {dy}{dx})}e21(dxdy) = 3x is (where C is a constant of integration.)
A random variable X has the following probability distribution then P (X ≥ 2) =?
Two numbers are selected at random from the first six positive integers. If X denotes the larger of two numbers, then Var (X) =?
Probability of getting odd numbers in first 100 numbers.
If the slope of one of the lines given by ax2 + 2hxy + by2 = 0 is two times the other, then