Correct Answer) A: 5000

Description:

•5000•5448•6000

Therefore, 5448 rounded off the nearest 1000 is 5000.

Correct Answer) A: 120

Description:

Total Marks in 6 test= 50 x 6= 300.
Total Marks required in 7 tests = 60 x 7 = 420, So the marks in 7th test will be:
420 - 300 = 120 Ans.

Correct Answer) A: 85

Description:

Solution:
x + 20/100*x = 102
x + 1/5 *x = 102
5x + x/5 = 102
6/5*x = 102
6x = 102*5
6x = 510
x = 510/6
x = 85 Ans.

Correct Answer) A: 1/216

Description:

Solution:
Sample space = 6x6x6x6 =1296
Possible outcomes = 6
Probability = 6/1296
= 1/216 Ans.

Correct Answer) A: rectangles

Description:

A histogram is an approximate representation of the distribution of numerical data. It was first introduced by Karl Pearson. To construct a histogram, the first step is to "bin" (or "bucket") the range of values—that is, divide the entire range of values into a series of intervals—and then count how many values fall into each interval. The bins are usually specified as consecutive, non-overlapping intervals of a variable. The bins (intervals) must be adjacent and are often (but not required to be) of equal size.

Correct Answer) B: 60

Description:

400*5/100 = 20
For 3 years:
3*20 = 60 Ans.

Correct Answer) B: 24

Description:

Perimeter of a Rhombus formula: P=4a
P = 4*6
P = 24 Ans.
*a = sides

Correct Answer) B: 0.03

Description:

Discription)
Solution: 3/100 = 0.03 Ans.

Correct Answer) B: 7

Description:

x - 4 = 11
x = 11 + 4
x = 15
Now, x - 8
putting the value of x:
15 - 8 = 7 Ans.

Correct Answer) D: 8

Description:

x/10 = 4/5 the second ratio is reversed, as the relation is resverse,
x = 10 x 4 /5 = 8

Correct Answer) B: associative property w.r.t addition

Description:

For more details visit:
http://www.solving-math-problems.com/closure-property.html

Correct Answer) B: 11/3

Description:

Solution:
x+y + y+z + z+x = 6 + 7 + 9
2x + 2y + 2z = 22
2(x + y + z) = 22
x + y + z = 22/2
x + y + z = 11
to calculate arithmetic mean:
x + y + z / 3 = 11 / 3 Ans.

Correct Answer) A: 2,-15

Description:

Correct Answer) D: 0.02

Description:

.02 percent * 100 =
(.02:100)* 100 =
(.02* 100):100 =
2:100 = 0.02
Source:
https://www.percentagecal.com/answer/what-is-.02-percent-of-%20%20100

Correct Answer) B: 60 cm^2

Description:

area of a rectangle = Length × Width
A = l × w
A = 10 cm x 6cm
A = 60 cm^2 Ans.

Correct Answer) D: _____

Description:

For more details visit:
https://byjus.com/maths/bodmas-rule/

Correct Answer) B: 5.6 %

Description:

Solution: Price of 1 dozen = 375
Price of 1 toy = 375/12, which is 31.25
So, Cost Price = 31.25
Sales Price = 33
Profit = S.P – C.P
= 33 – 31.25
= 1.75
To calculate profit%, formula
Profit% = Profit/C.P * 100
Profit% = 1.75/3125*100
Profit% = 5.6%

Correct Answer) B: 5 - 4i

Description:

The conjugate is where we change the sign in the middle of two terms.
For more details visit:
https://www.mathsisfun.com/algebra/conjugate.html

Correct Answer) D: 12

Description:

72/2 ÷ 18/6
72/2 x 6/18 = 12 Ans.

Correct Answer) A: 120

Description:

Total Marks in 6 test= 50 x 6= 300.
Total Marks required in 7 tests = 60 x 7 = 420, So the marks in 7th test will be:
420 - 300 = 120 Ans.

Correct Answer) B: \[\left\{ {3,9} \right\}\,\]

Description:

\[\begin{array}{l}
Solution:\,\\
{A^c}\, = \,U - A\\
\, = \,\,\left\{ {1,3,5,7,9} \right\}\,\, - \,\,\left\{ {1,5,7} \right\}\\
\, = \,\left\{ {3,9} \right\}\,Ans.
\end{array}\]

Correct Answer) A: rectangles

Description:

A histogram is an approximate representation of the distribution of numerical data. It was first introduced by Karl Pearson. To construct a histogram, the first step is to "bin" (or "bucket") the range of values—that is, divide the entire range of values into a series of intervals—and then count how many values fall into each interval. The bins are usually specified as consecutive, non-overlapping intervals of a variable. The bins (intervals) must be adjacent and are often (but not required to be) of equal size.

Correct Answer) D: none of these

Description:

Correct Answer) D: 12

Description:

Lets's suppose the number is "x"
x/3 + 2x = 28
7x = 84
x = 12 Ans.

Correct Answer) A: xy=k

Description:

For details visit here:
https://socratic.org/questions/if-y-is-inversely-proportional-to-x-and-y-15-when-x-5-what-is-the-value-of-y-whe