Square Roots and Cube Roots Practice Question and Answer

Q:

किसी संख्या के वर्ग, तथा उसके घन के व्युत्क्रम का अनुपात 243/16807 है। संख्या क्या है ?

680 0

  • 1
    2/7
    Correct
    Wrong
  • 2
    7/3
    Correct
    Wrong
  • 3
    3/7
    Correct
    Wrong
  • 4
    5/7
    Correct
    Wrong
  • Show Answer
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Answer : 3. "3/7"

Q:

दिया गया है कि √4096 = 64, तो  √4096 + √40.96 +√0.004096 का मान है-

608 0

  • 1
    70.4
    Correct
    Wrong
  • 2
    70.464
    Correct
    Wrong
  • 3
    71.104
    Correct
    Wrong
  • 4
    71.4
    Correct
    Wrong
  • Show Answer
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Answer : 2. "70.464"
Explanation :

दिया गया = √4096 + √40.96 +√0.004096

= 64 + 6.4 + 0.064

= 70.464

Q:

√6+√6+√6+… बराबर है –

573 0

  • 1
    2
    Correct
    Wrong
  • 2
    5
    Correct
    Wrong
  • 3
    4
    Correct
    Wrong
  • 4
    3
    Correct
    Wrong
  • Show Answer
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Answer : 4. "3"
Explanation :

Let √6+√6+√6+…. be x.

We know x =√6+x

We know x2 = 6+x

We know x2 - x – 6 = 0

We know (x-3) (x+2) = 0

We know x = 3

Q:

निम्नलिखित प्रश्न में प्रश्न चिह्न (?) के स्थान पर क्या आएगा?

 

673 0

  • 1
    7
    Correct
    Wrong
  • 2
    6
    Correct
    Wrong
  • 3
    8
    Correct
    Wrong
  • 4
    9
    Correct
    Wrong
  • Show Answer
  • Workspace

Answer : 4. "9"

Q:

निम्नलिखित द्विघात समीकरणों में से किसके वास्तविक मूल हैं?

680 0

  • 1
    4x- 7x + 5 = 0
    Correct
    Wrong
  • 2
    5x2 - 11x + 7 = 0
    Correct
    Wrong
  • 3
    5x2 - 11x + 8 = 0
    Correct
    Wrong
  • 4
    2x2 - 7x + 5 = 0
    Correct
    Wrong
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  • Workspace

Answer : 4. "2x2 - 7x + 5 = 0"

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  • Workspace

Answer : 1. "2"

Q:

 का मान होगा—

878 0

  • 1
    0.1
    Correct
    Wrong
  • 2
    0.5
    Correct
    Wrong
  • 3
    0.06
    Correct
    Wrong
  • 4
    0.8
    Correct
    Wrong
  • Show Answer
  • Workspace

Answer : 2. "0.5"

Q:

 का मान क्या होगा?

960 1

  • 1
    47
    Correct
    Wrong
  • 2
    56
    Correct
    Wrong
  • 3
    52
    Correct
    Wrong
  • 4
    36
    Correct
    Wrong
  • Show Answer
  • Workspace

Answer : 1. "47"

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