21000+ Important MCQs for UPSC

21000+ MCQs for UPSC are available here. You can learn these questions for your better preparation. Questions are available with its correct answer. You can check the correct answer of any questions by clicking the option or show answer button.
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Learn UPSC MCQs with answers [Page 12 ]

R

Ranjeet • 34.60K Points
Instructor I Math

Q) Two numbers are in the ratio 5 : 7 if their HCF is 4 find the numbers

  • (A) 15, 21
  • (B) 35, 49
  • (C) 50, 70
  • (D) 20, 28
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Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

R

Ranjeet • 34.60K Points
Instructor I Math

Q) Find the least number which when divided by 16, 24 and 36 leaves the remainders 7, 25 and 27 respectively.

  • (A) 136
  • (B) 135
  • (C) 145
  • (D) 256
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Correct Answer - Option (B)

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M

Mr. Dubey • 100.69K Points
Coach Math

Q) Find the average of all prime numbers between 30 and 50.

  • (A) 39.8
  • (B) 38.8
  • (C) 37.8
  • (D) 41.8
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Correct Answer - Option (A)

Explanation :

Prime number-a number that is divisible only by itself and 1 (e.g. 2, 3, 5, 7, 11).
Then the total prime number b/w 30 to 50=31,37,39,41,43,47
Now average=(31+37+39+41+43+47)/6=39.666667,
Approximate=39.8

M

Mr. Dubey • 100.69K Points
Coach Science

Q) A person who lives exclusively on milk, egg and bread is likely to become a victim of

  • (A) Rickets
  • (B) Scurvy
  • (C) Xerophthalmia
  • (D) None of these
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Correct Answer - Option (B)

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