Maths Practice Question and Answer

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Answer : 1. "4"
Explanation :

Answer: A) 4 स्पष्टीकरण: यह देखते हुए कि, खिड़कियों की संख्या = 50 प्रत्येक खिड़की को कवर करने वाली 15 खिड़कियां => 50 खिड़कियों के लिए 50/15 विंडो कवरिंग की आवश्यकता होती है = 50/15 = 3.333 इसलिए, 3 से अधिक विंडो कवरिंग की आवश्यकता होती है। विकल्पों में 4, 3 से अधिक है। इसलिए, प्रत्येक कवरिंग की 50 खिड़कियों को कवर करने के लिए 4 विंडो कवरिंग की आवश्यकता होती है, 15 विंडो को कवर करता है।

Q: A 200 m long train passes a motorcycler, running in the same direction at 12 km/hr, in 15 second and a jeep travelling in the same direction in 20 s. At what speed is the car travelling (length of both the motorcycler and jeep is negligible)? 2494 0

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    36 kmph
    Correct
    Wrong
  • 2
    32 kmph
    Correct
    Wrong
  • 3
    29 kmph
    Correct
    Wrong
  • 4
    24 kmph
    Correct
    Wrong
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Answer : 4. "24 kmph"
Explanation :

Answer: D) 24 kmph Explanation: Let the speed of the train be 'S' kmph From the given data, Distance = Length of train = D = 200 mts = 200 x 18/5 kms Time = 10 sec given speed of the motorcycler = 12 kmph Relative speed as they are moving in the same direction = (S - 12) kmph (S- 12) = 200 x 18515S - 12 = 48S = 60 kmph  Hence, the speed of the train = S = 60 kmph Now, Let the speed of the jeep be 'x' kmph 60 - x = 200 x 1852060 - x = 36x = 60 - 36x = 24 kmph   Therefore, the speed of the jeep = x = 24 kmph.

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Answer : 2. "45 yrs"
Explanation :

Answer: B) 45 yrs Explanation: Let father's age be x year and son's age be y year. According to question, 2(x+y) = 8y _______(I) and (x+y)/2 = 30 => x+y = 60 years__________(II) From equation (I) and (II) 8 y = 120 y = 15 years, Hence x = 45 years.

Q: 0.01 का कितना प्रतिशत 0.1 है? 3009 2

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    10%
    Correct
    Wrong
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    $${1\over 10}\% $$
    Correct
    Wrong
  • 3
    100%
    Correct
    Wrong
  • 4
    $${1\over 100}\% $$
    Correct
    Wrong
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Answer : 1. " 10%"
Explanation :


Q: रु 10,000 की राशि का कुछ भाग 8% ब्याज दर से तथा शेष भाग 10% की दर से उधार दिया है। यदि उसकी औसत वार्षिक ब्याज दर 9.2% है, दोनों भाग होंगे। 2173 0

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    Rs. 4000, Rs. 6000
    Correct
    Wrong
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    Rs. 4500, Rs. 5500
    Correct
    Wrong
  • 3
    Rs. 5000, Rs. 5000
    Correct
    Wrong
  • 4
    Rs. 5500, Rs. 4500
    Correct
    Wrong
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Answer : 1. "Rs. 4000, Rs. 6000"

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Answer : 2. "2 वर्ष"

Q:

प्रशासनिक विभाग में कर्मचारियों की संख्या का समान विभाग में पुरुषों की संख्या से संबंधित अनुपात क्या है?

7798 1

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    9:4
    Correct
    Wrong
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    8:3
    Correct
    Wrong
  • 3
    7:2
    Correct
    Wrong
  • 4
    8:5
    Correct
    Wrong
  • 5
    इनमें से कोई नहीं
    Correct
    Wrong
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Answer : 1. "9:4"

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Answer : 1. "36"

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