Maths Practice Question and Answer

Q:

भाग के एक प्रश्न में भाजक भागफल का 7 गुना और शेषफल का 3 गुना है। यदि शेषफल 28 है, तो लाभांश है

1145 0

  • 1
    588
    Correct
    Wrong
  • 2
    784
    Correct
    Wrong
  • 3
    823
    Correct
    Wrong
  • 4
    1036
    Correct
    Wrong
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Answer : 4. "1036"
Explanation :

माना कि भागफल Q है और शेषफल R है

भाजक = 7 Q = 3 R

∴ भाजक = 7 Q = 7 × 12 = 84

लाभांश = भाजक × भागफल + शेषफल = 84 × 12 + 28 = 1008 + 28 = 1036

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Answer : 2. "कुल लागत का 10 प्रतिशत।"

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Answer : 3. "80 π"

Q:

24% of 680 + 16 % of 525 – 22% of 450 =?

1142 0

  • 1
    217
    Correct
    Wrong
  • 2
    155
    Correct
    Wrong
  • 3
    233
    Correct
    Wrong
  • 4
    189
    Correct
    Wrong
  • 5
    इनमें से कोई नहीं
    Correct
    Wrong
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Answer : 2. "155"

Q:

दो प्राकृत क्रमागत विषम संख्याओं के वर्गों का योग 394 होता है। संख्याओं का योग होता है -

1142 0

  • 1
    24
    Correct
    Wrong
  • 2
    32
    Correct
    Wrong
  • 3
    40
    Correct
    Wrong
  • 4
    28
    Correct
    Wrong
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Answer : 4. "28"
Explanation :

Let the consecutive odd numbers be x and (x+2)

We know that x2 + (x + 2)2 = 394

We know   x2 + x2 + 4x + 4 = 394

We know   2 x2 +4x – 390 = 0

We know   x2 + 2x – 195 = 0

We know  (x +15) (x-13) = 0

We know   x = 13

We know    Required sum = 13 +15 =28

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