Aptitude Questions Practice Question and Answer

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Answer : 4. "230 मीटर"

Q: कोई राशि साधारण ब्याज द्वारा किसी दर से 3 वर्ष में स्वयं की $${7\over6}$$ गुना हो जाती है। ब्याज की वार्षिक दर बताएं। 1587 1

  • 1
    $$5{5\over9}\%$$
    Correct
    Wrong
  • 2
    $$6{5\over9}\%$$
    Correct
    Wrong
  • 3
    18%
    Correct
    Wrong
  • 4
    25%
    Correct
    Wrong
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Answer : 1. "$$5{5\over9}\%$$"

Q: The Value of  logtan10+logtan20+⋯⋯+logtan890 is 1472 1

  • 1
    -1
    Correct
    Wrong
  • 2
    0
    Correct
    Wrong
  • 3
    1/2
    Correct
    Wrong
  • 4
    1
    Correct
    Wrong
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Answer : 2. "0"
Explanation :

Answer: B) 0 Explanation: = log tan10+log tan890 + log tan20+ log tan880+⋯⋯+log tan450     = log [tan10 × tan890] + log [tan20 × tan880 ] +⋯⋯+log1     ∵ tan(90-θ)=cotθ and tan 450=1     = log 1 + log 1 +.....+log 1    = 0.

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Answer : 3. "20 "

Q: A flagstaff 17.5 m high casts a shadow of length 40.25 m. What will be the height of a building, which casts a shadow of length 28.75 m under similar conditions ? 1306 1

  • 1
    14 cm
    Correct
    Wrong
  • 2
    13.5 cm
    Correct
    Wrong
  • 3
    12.5 cm
    Correct
    Wrong
  • 4
    11.4 cm
    Correct
    Wrong
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Answer : 3. "12.5 cm"
Explanation :

Answer: C) 12.5 cm Explanation: Let the required height of the building be x meter More shadow length, More height(direct proportion) Hence we can write as (shadow length) 40.25 : 28.75 :: 17.5 : x⇒ 40.25 × x = 28.75 × 17.5⇒ x = 28.75 × 17.5/40.25= 2875 × 175/40250= 2875 × 7/1610= 2875/230= 575/46= 12.5 cm

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