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Recently added practice questions

5261. The average marks of a class of 30 students is 40 and that of another class of 50 students is 60. Find the average marks of all the students?
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A. 50

B. 47.5

C. 52.5

D. 59

5262. The average marks in mathematics scored by the students of a school at the public examination were 39. If four of these students who actually scored 5, 12, 15 and 19 marks at the examination had not been sent up, the average marks for the school would have been 44. Find the number of students sent up for examination from the school?
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A. 32

B. 30

C. 25

D. 20

5263. The average mark of the students of a class in a particular exam is 80. If 5 students whose average mark in that exam is 40 are excluded, the average mark of the remaining will be 90. Find the number of students who wrote the exam.
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A. 15

B. 25

C. 35

D. 20

5264. The average height of 50 pupils in a class is 150 cm. Five of them whose height is 146 cm, leave the class and five others whose average height is 156 cm, join. The new average height of the pupils of the class (in cm) is __________ .
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A. 151

B. 153

C. 149

D. 152

5265. The average boiling point of aviation turbine fuel is closest to that of__________________?
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A. Kerosene

B. Lubricating oils

C. Diesel

D. LPG

5266. The average boiling point of aviation turbine fuel is closest to that of__________________?
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A. Kerosene

B. Diesel

C. Lubricating oils

D. LPG

5267. The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years. The ration of the number of boys to the number of girls in the class is___________?
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A. 3:05

B. 3:04

C. 1:02

D. 2:3
5268. The average age of M boys is b years and of n girls c years. The average age of all together is_________?
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A. (mb nc)/ (m + n) years

B. (mb nc)/ (m n) years

C. (mb + nc)/ (m + n) years

D. (mb + nc)/ (m n) years

5269. The average age of 8 men increases by 2 years when two women are included in place of two men of ages 20 and 24 years. Find the average age of the women?
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A. 24 years

B. 36 years

C. 18 years

D. 30 years
5270. The average age 9 members of a committee are the same as it was 2 years ago, because an old number has been replaced by a younger number. Find how much younger is the new member than the old number?
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A. 27 years

B. 7 years

C. 11 years

D. 18 years
5271. The average acceleration caused by gravity per second is____________?
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A. 52 feet

B. 22 feet

C. 32 feet

D. 42 feet

5272. The available from of nitrogen for plant is________________?
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A. NO<sub>3</sub>

B. NH<sub>4</sub>

C. Both a & b

D. None of the above

5273. The available form of sulphur for plant is___________________?
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A. SO3

B. S2

C. SO2

D. SO-2
5274. The author of the Novel Godfather is______________?
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A. Mohsin Hamid

B. Pro.Muhammad Younas

C. W. E.Hunter

D. Mario Puzo
5275. The Author of book The Reluctant Fundamentalist is_____________?
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A. Hafeez Ali Jan

B. Nazir Ahmed

C. Mohsin Hamid

D. Rafiq Tarar

5276. The Author of book Pakistan: A Hard Country is___________?
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A. I H Qureshi

B. Ruskin Dom

C. Stephan Job

D. Anatol lieven
5277. The Aurora Borealis, also known as ________?
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A. Western lights

B. Eastern lights

C. Northern lights

D. Southern lights

5278. The attraction capacity of electromagnet will increase if the_______________?
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A. flux density decreases

B. flux density increases

C. core length increases i

D. core area increases

5279. The attack stage in which the strategies cause gaps and then the marketing gaps are filled is considered as ___________?
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A. guerilla attack

B. flank attack

C. bypass attack

D. frontal attack

5280. The atomic radii decreases by increasing atomic number in________________?
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A. Alkaline earth metal

B. Halogens

C. Elements from Li to Ne

D. Alkali metal

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