Mix Test 1

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Mix Test 1

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Weekly Quiz Competition

Question 1
1 / -0

Two coins are tossed simultaneously 300 times. Either one or two heads are obtained 198 times. The probability of getting no head is

A
0.45

B
0.36

C
0.34

D
0.21

Solution

Explanation:

Number of times two coins are tossed simultaneously = 300

Number of times either one or two heads are obtained = 198

Number of times no heads are obtained = 300 - 198 = 102

The probability of getting no head = 102 / 300 = 0.34
Question 2
1 / -0

In an examination, ten students scored the following marks: 60, 58, 90, 51, 47, 81, 70, 95, 87, 99. The range of this data is

A
81

B
60

C
52

D
51

Solution

Explanation:

Difference between the maximum & minimum value of the observation is called as range.

So, 99-47=52
Question 3
1 / -0

The minimum value of a data is 82 and range is 38, then the maximum value is

A
120

B
76

C
60

D
82

Solution

Explanation:

Difference between the maximum & minimum value of the observation is called as range.

Let maximum value be xx

So,

x−82=38x−82=38

x=82+38x=82+38

x=120
Question 4
1 / -0

The length of the longest rod that can be placed in a room 12 m long, 9 m broad and 8 high is

A
20 m.

B
17 m.

C
18 m.

D
15 m.

Solution

Explanation:

Diagonal of cuboid

= √ ( L² + B² + C² )

= √ ( 12² + 9² + 8² )

= √ 289

= 17 m

Thus, longest rod that could be placed would be along diagonal.i.e 17 m
Question 5
1 / -0

A rectangular pit of dimensions 30m × 15m × 12m is dug and the earth taken out is disposed off in a carrier which can carry a maximum load of 3540m³ of earth. The least number of rounds the carrier had to make to dispose off the earth dug out is

A
10.

B
12.

C
20.

D
15.

Solution

Explanation:

Volume of pit = 30×15×12=5400 m²

Number of round = Volume of pit ÷ volume of carrier

= 5400 ÷ 540 = 10
Question 6
1 / -0

If one angle of a triangle is equal to the sum of the other two angles, then the triangle is :

A
an obtuse angled triangle

B
a right triangle

C
an equilateral triangle

D
an isosceles triangle

Solution

Explanation:

The sum of the angles of triangle is 180 degrees.

let the angles of triangle be a , b, c

we have given that one angle of a triangle is equal to the sum of the other two angles

so we have

c=a + b

a + b + c = 180

Substitute c for a +b

c + c = 180

2c = 180

c = 90

therefore the triangle is a right triangle.
Question 7
1 / -0

The point A(3, 4) lies in

A
I Quadrant

B
II Quadrant

C
IV Quadrant

D
III Quadrant

Solution

Explanation:

In 1st quadrant sign of both coordinates is positive i.e, (+,+)

So ,(3,4) will lie in quadrant 1
Question 8
1 / -0

Which of the following is an irrational number?

A
2.717¯

B
2.717

C
2.717171717171………

D
2.717117111711117…………

Solution

Explanation:

an irrational number in decimal form goes on forever without repeating (a non-repeating, non-terminating decimal)

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Re-Attempt Weekly Quiz Competition

Mix Test 1

Result

Mix Test 1

Score

-

Rank

-

SHARING IS CARING

Question 1

0.45

0.36

0.34

0.21

Solution

Question 2

81

60

52

51

Solution

Question 3

120

76

60

82

Solution

Question 4

20 m.

17 m.

18 m.

15 m.

Solution

Question 5

10.

12.

20.

15.

Solution

Question 6

an obtuse angled triangle

a right triangle

an equilateral triangle

an isosceles triangle

Solution

Question 7

I Quadrant

II Quadrant

IV Quadrant

III Quadrant

Solution

Question 8

2.717¯

2.717

2.717171717171………

2.717117111711117…………

Solution

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Question Analysis

My Perfomance

Score

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Rank

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