" /> -->

#### 12th Standard Business Maths English Medium Free Online Test Creative 1 Mark Questions - Part Two

12th Standard EM

Reg.No. :
•
•
•
•
•
•

Time : 00:10:00 Hrs
Total Marks : 10

10 x 1 = 10
1. The value of $\left| \begin{matrix} { 5 }^{ 2 } & { 5 }^{ 3 } & { 5 }^{ 4 } \\ { 5 }^{ 3 } & { 5 }^{ 4 } & { 5^{ 5 } } \\ { 5 }^{ 4 } & { 5 }^{ 5 } & { 5 }^{ 6 } \end{matrix} \right|$

(a)

52

(b)

0

(c)

513

(d)

59

2. $\int { { \left| x \right| }^{ 3 } }$dx = ________________ +c

(a)

$\frac { { -x }^{ 4 } }{ 4 }$

(b)

$\frac { { \left| x \right| }^{ 4 } }{ 4 }$

(c)

$\frac { { x }^{ 4 } }{ 4 }$

(d)

none of these

3. The area unded by the curves y = 2x, x = 0 anx=2 is________sq.units.

(a)

loge2

(b)

3loge2

(c)

$\frac{3}{log_e2}$

(d)

2loge3

4. The amount present in a radio active element disintegrates at a rate proportional to its amount. The differential equation corresponding to the above statement is (k is negative).

(a)

$\frac { dp }{ dt } =\frac { k }{ p }$

(b)

$\frac { dp }{ dt }$=kt

(c)

$\frac { dp }{ dt }$=kp

(d)

$\frac { dp }{ dt }$=-kt

5. ∆f(x + 3h)

(a)

f(x + 3h) - f(x + 4h)

(b)

f(x + 4h) - f(x + 3h)

(c)

f(x + h) - f(x)

(d)

f(x + 2h) - f(x + 3h)

6. A random variable X has the following probability mass function

 X -2 3 1 P(X=x) $\frac{\lambda}{6}$ $\frac{\lambda}{4}$ $\frac{\lambda}{12}$

Then λ is

(a)

1

(b)

2

(c)

3

(d)

4

7. In 8 throws of a die, 1 or 3 is considered a success. Then the mean number of successes is

(a)

$\frac{8}{3}$

(b)

$\frac{4}{3}$

(c)

$\frac{2}{3}$

(d)

$\frac{5}{3}$

8. The number of ways in which one can select 2 customers out of 10 customers is

(a)

90

(b)

60

(c)

45

(d)

50

9. Most frequently used index number formulae are_____

(a)

weighted

(b)

unweighted

(c)

fixed weighted

(d)

non of these

10. In least cost method if the minimum cost is not unique then the choice can be made as

(a)

arbitrarily

(b)

unique

(c)

difference

(d)

summation