DELHI POLICE CONSTABLE QUANT QUIZ

Question 1:

There are 66 students in a class. Average mark obtained by boys is 57 and average mark obtained by girls is

63 .

If average marks of obtained by the class is 58, find difference of number of boys and number of girls.

36

44

48

33

Question 2:

The surface area (in sq. cm.) of a sphere with radius $1 cm$ is (take $π = 22 / 7$ )

1 सेमी त्रिज्या वाले एक गोले का पृष्ठीय क्षेत्रफल (वर्ग सेमी में) क्या है $(π = 22 / 7$ लीजिये)

89 / 7

89 / 7

89 / 21

89 / 21

88 / 21

88 / 21

88 / 7

88 / 7

Question 3:

If $5 a + \frac{1}{3 a} = 5$ , then the value of $9 a^{2} + \frac{1}{25 a^{2}}$ is:

यदि $5 a + \frac{1}{3 a} = 5$ , तो $9 a^{2} + \frac{1}{25 a^{2}}$ का मान है-

\frac{51}{5}

\frac{51}{5}

\frac{29}{5}

\frac{29}{5}

\frac{52}{5}

\frac{52}{5}

\frac{39}{5}

\frac{39}{5}

Question 4:

The value of $(\tan^{2} A + \cot^{2} A - 2) - \sec^{2} A {cosec}^{2} A$ is:

$(\tan^{2} A + \cot^{2} A - 2) - \sec^{2} A {cosec}^{2} A$ का मान है:

- 4

- 4

- 1

- 1

1

1

4

4

Question 5:

3 men dig a hole in 10 days. How many days would it take for 5 men to dig the same hole?

50 / 3

7

5

6

Question 6:

If

x - y = 9

and

x^{3} - y^{3} = 360

, then the value of

x y

?

यदि

x - y = 9

और

x^{3} - y^{3} = 360

हो तब

x y

का मान ज्ञात करें?

- \frac{47}{3}

- \frac{47}{3}

- \frac{40}{3}

- \frac{40}{3}

- \frac{38}{3}

- \frac{38}{3}

- \frac{41}{3}

- \frac{41}{3}

Question 7:

Find the compound interest on Rs.15, 625 for 9 months at

16 %

per annum compounded quarterly.

16 %

वार्षिक ब्याज की दर से 15,625 रू का 9 महीने के लिए चक्रवृद्धि ब्याज ज्ञात करे? जब ब्याज की गणना तिमाही हो।

Rs. 1760

Rs. 1800

Rs. 1500

Rs. 1951

Question 8:

Find the HCF of 865 and 2595.

25

2525

865

5

Question 9:

There are total 200 students in a school, of which $\frac{1}{5}$ th are boys. Find the number of girls in the school.

एक विद्यालय में कुल 200 छात्र हैं, जिनमें से $\frac{1}{5}$ लड़के हैं। विद्यालय में लड़कियों की संख्या ज्ञात कीजिए।

160

16

140

40

Question 10:

What is the value of $14^{2} + 16^{2} + 18^{2} \dots \dots \dots . {.30}^{2} ?$

$14^{2} + 16^{2} + 18^{2} \dots \dots \dots {.30}^{2}$ का मान क्या है ?

4448

4596

3296

5134