30000+ Important MCQs for POLICE SI

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Learn POLICE SI MCQs with answers [Page 6 of Department 70]

M

Mr. Dubey • 100.69K Points
Coach Math

51) A and B together can do a work in 8 days, B and C together in 6 days while C and A together in 10 days, if they all work together, the work will be completed in :

  • (A) 4 4/9 days
  • (B) 5 5/47 days
  • (C) 3 3/4 days
  • (D) 3 3/7 days
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Correct Answer - Option (B)

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

M

Mr. Dubey • 100.69K Points
Coach Math

52) A and B together can complete a work in 8 days and B and C together in 12 days. All of the three together can complete the work in 6 days. In how much time will A and C together complete the work ?

  • (A) 20 days
  • (B) 12 days
  • (C) 8 days
  • (D) 10 days
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Correct Answer - Option (C)

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

M

Mr. Dubey • 100.69K Points
Coach Math

53) A can do a work in 6 days and B in 9 days. How many days will both take together to complete the work?

  • (A) 3 days
  • (B) 3.6 days
  • (C) 7.5 days
  • (D) 5.4 days
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Correct Answer - Option (B)

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

M

Mr. Dubey • 100.69K Points
Coach Math

54) A and B together can do a work in 10 days. B and C together can do the same work in 6 days. A and C together can do the work in 12 days. Then A, B and C together can do the work in

  • (A) 8 2/7 days
  • (B) 5 5/7 days
  • (C) 28 days
  • (D) 14 days
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Correct Answer - Option (B)

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

M

Mr. Dubey • 100.69K Points
Coach Math

55) A, B and C together can complete a piece of work in 30 minutes. A and B together can complete the same work in 50 minutes. C alone can complete the work in

  • (A) 150 minutes
  • (B) 80 minutes
  • (C) 60 minutes
  • (D) 75 minutes
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Correct Answer - Option (D)

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

M

Mr. Dubey • 100.69K Points
Coach Math

56) A can do a piece of work in 4 hours; B and C can do it in 3 hours. A and C can do it in 2 hours. How long will B alone take to do it ?

  • (A) 24 hours
  • (B) 8 hours
  • (C) 10 hours
  • (D) 12 hours
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Correct Answer - Option (B)

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

M

Mr. Dubey • 100.69K Points
Coach Math

57) While working 7 hours a day, A alone can complete a piece of work in 6 days and B alone in 8 days. In what time would they complete it together, working 8 hours a day ?

  • (A) 3.6 days
  • (B) 2.5 days
  • (C) 3 days
  • (D) 4 days
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Correct Answer - Option (C)

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

M

Mr. Dubey • 100.69K Points
Coach Math

58) A and B can complete a piece of work in 8 days, B and C can do it in 12 days, C and A can do it in 8 days. A, B and C together can complete it in

  • (A) 7 days
  • (B) 6 days
  • (C) 4 days
  • (D) 5 days
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Correct Answer - Option (B)

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

L

Lokendra Rathod • 2.31K Points
Master Reasoning

59) Assertion (A):
Inside the Earth, metals are present in a molten state.
Reason (R):
The earth absorbs the Sun's rays.

  • (A) If both 'A' and 'R' are true and 'R' is the correct explanation of 'A'
  • (B) If both 'A' and 'R' are true but 'R' is not the correct explanation of 'A'
  • (C) If 'A' is true but 'R' is false
  • (D) If 'A' is false but 'R' is true
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Correct Answer - Option (C)

Explanation :

Inside the Earth, the high temperature and pressure keep the metals in a molten state.

The Earth does not absorb the Sun's rays but reflects them.

L

Lokendra Rathod • 2.31K Points
Master Reasoning

60) Assertion (A):
Mahatma Gandhi is considered as ‘Father of the Nation' in India.
Reason (R):
Mahatma Gandhi was the first Governor-General of Independent India.

  • (A) If both 'A' and 'R' are true and 'R' is the correct explanation of 'A'
  • (B) If both 'A' and 'R' are true but 'R' is not the correct explanation of 'A'
  • (C) If 'A' is true but 'R' is false
  • (D) If 'A' is false but 'R' is true
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Correct Answer - Option (C)

Explanation :

A is true and R is false. Mahatma Gandhi is considered as 'Father of the Nation' in India but he was not the first Governor-general of independent India.

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