8286.If f(x) = $\dfrac{1}{x^{2}}$ and g(x) = $e^{-9x}$
then (fog ) (x ) is
then (fog ) (x ) is
$\dfrac{1}{e^{18x}}$
$\dfrac{1}{e^{-18x}}$
$\dfrac{1}{e^{-18x^{2}}}$
$\dfrac{1}{e^{18x^{2}}}$
8304.Standard deviation of a set of 50 observations is 6.5. If value of each observation
is increased by 5, then the standard deviation is
is increased by 5, then the standard deviation is
2.5
15
3.5
1.0
8352.What is the value of $\dfrac{(0.0104-0.002) of 0.12+0.36*0.002} {0.12*0.12}$
0.1001
0.1101
0.12
0.13
8388.If $A = \begin{bmatrix}1 & 4 \\2 & -1 \end{bmatrix}$ , f(x)= $x^{2}$- 9, then f(A) is
$\begin{bmatrix}-8 & 5 \\ -5 & -8 \end{bmatrix}$
$\begin{bmatrix}0 & 0 \\ 0 & 0 \end{bmatrix}$
- 16
12
8394.A bought a horse for Rs. 10,000 and sold it to B at 0% profit and B sold it to C at 10% loss. The amount paid by C is
c) Rs. 9999
c) Rs. 9999
Rs. 10,000
Rs. 9,900
Rs. l l,000
8462.A shopkeeper marks his goods to gain 30%. But he allows 10% discount for down cash payment. His profit per cent is
20%
17%
15%
13%
8468.The total expenditure of a family is Rs. 1,080 and they are spending Rs. 450, for food. Then to draw a pie diagram the degree value is
1350
864
150
100
8532.Marks obtained by 7 students in Computer Science 45, 40, 60, 90, 80, 65, 55.
The median value for the data is
The median value for the data is
90
60
80
55
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