RRB GROUP D QUANT QUIZ

Question 1:

The present age of Shivani and anshu is 6:7 and 36 years ago this ratio was 12:17. Find the sum of their present ages.

शिवानी और अंशु की वर्तमान आयु $6 : 7$ है तथा 36 वर्ष पहले यह अनुपात $12 : 17$ था। उनकी वर्तमान आयु का योग ज्ञात कीजिए।

105 years

125 years

138 years

None of these

Question 2:

Direction: What should come in Place of Question Mark (?) in the following question?

$?^{3} = 64 %$ of $250 + 19 \times 20 - 14^{2} + 168$

निर्देश: निम्नलिखित प्रश्न में प्रश्नवाचक चिन्ह (?) के स्थान पर क्या आना चाहिए?

$?^{3} = 64 %$ of $250 + 19 \times 20 - 14^{2} + 168$

10

8

9

6

Question 3:

A batsman has an average run in 16 innings. He scored 80 runs in the 17th innings, increasing his average by 2. His average of runs after 17th innings is

45 runs

48 runs

44 runs

42 runs

Question 4:

If

\frac{\sin θ + \cos θ}{\sin θ - \cos θ} = 7

, then the value of

\tan θ

is equal to:

यदि

\frac{\sin θ + \cos θ}{\sin θ - \cos θ} = 7

हो, तो

\tan θ

किसके बराबर होगा?

\frac{2}{3}

\frac{2}{3}

\frac{4}{3}

\frac{4}{3}

\frac{1}{3}

\frac{1}{3}

\frac{5}{3}

\frac{5}{3}

Question 5:

A motor boat travelling at the same speed can cover $25 km$ upstream and $39 km$ downstream in $8$ hours. At the same speed, it can travel $35 km$ upstream and $52$ km downstream in $11$ hours. The speed of the stream is-

2 Km / hr

3 Km / hr

4 Km / hr

5 Km / hr

Question 6:

If the distance between two points $(k + 1, 9)$ and $(4, - 6)$ is 17 units then find the value of $k$ .

यदि दो बिंदुओं $(k + 1, 9)$ और $(4, - 6)$ के बीच की दूरी 17 इकाई है, तो $k$ का मान ज्ञात कीजिए।

11, 5

11, 5

11, - 5

11, - 5

5, - 9

5, - 9

- 9, - 11

- 9, - 11

Question 7:

If $a + b - c = 7$ and $ab - bc - ac = 14$ , then find the value of $a^{2} + b^{2} + c^{2}$ .

यदि $a + b - c = 7$ और $ab - bc - ac = 14$ , तो $a^{2} + b^{2} + c^{2}$ का मान ज्ञात कीजिए|

21

22

23

24

Question 8:

A man buys two goats at Rs.120 each. He sells one at 25% gain and the other at 25% loss. How much is his profit or loss?

6.25% gain

No loss no gain

6.25% loss

Cannot be determined

Question 9:

The sum of the length, breadth and depth of a Cuboid is $21 cm$ and its diagonal is $7 \sqrt{7}$ . Its surface area is:

एक घनाभ की लम्बाई, चौड़ाई, व गहराई का योग 21 से.मी. है। उसका विकर्ण $7 \sqrt{7}$ से.मी. है। इसका पृष्ठीय क्षेत्रफल है:

97

87

89

98

Question 10:

Water is flowing from a cylindrical pipe 8 $mm$ in diameter at rate of 12 meter per minute. How long (time in seconds) will it take to fill up a conical vessel whose radius is $16 cm$ and height is $9 cm$ .