Problems based on the simplification for preparing TNPSC exams. Make use of these solved examples to prepare for exams.

1. In an examination, a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. If he attempts all 80 questions and secures 120 marks, How many questions does he answer correctly?

A. 30

B. 60

C. 50

D. 40

2. There are two buildings P and Q. If 15 persons are sent from P to Q, then the number of persons in each building is the same. If 20 persons are sent from Q to P, then the number of persons in P is double the number of persons in Q. How many persons are there in building P?

A. 80

B. 140

C. 120

D. 90

3. John gets on the elevator at the 14th floor of a building and rides up at the rate of 84 floors per minute. At the same time, Vinod gets on an elevator at the 58th floor of the same building and rides down at the rate of 92 floors per minute. If they continue travelling at these rates, then at which floor will their paths cross?

A. 38

B. 36

C. 32

D. 35

4. An organization decided to raise Rs. 6 lakh by collecting equal contribution from each of its employees. If each of them had contributed Rs. 60 extra, the contribution would have been Rs. 6.24 lakh. How many employees are there in that organization?

A. 400

B. 300

C. 200

D. 100

5. In a garden, there are 10 rows and 12 columns of mango trees. The distance between the two trees is 2 metres and a distance of one metre is left from all sides of the boundary of the garden. What is the length of the garden?

A. 30 m

B. 28 m

C. 26 m

D. 24 m

6. If a - b = 6 and a2 + b2 = 116, then what is the value of ab?

A. 20

B. 40

C. 60

D. 80

7. 20 + 20 × 2 = ?

A. 40

B. 50

C. 60

D. 70

8. A fires 5 shots to B's 3 but A kills only once in 3 shots while B kills once in 2 shots. When B has missed 27 times, A has killed:

A. 30 birds

B. 22 birds

C. 18 birds

D. 38 birds

9. Free notebooks were distributed equally among children of a class. The number of notebooks each child got was one-eighth of the number of children. Had the number of children been half, each child would have got 16 notebooks. Total how many notebooks were distributed?

A. 602

B. 528

C. 423

D. 512

10. A boy was asked to multiply a number by 22. He instead multiplied the number by 44 and got the answer 308 more than the correct answer. What was the number to be multiplied?

A. 16

B. 10

C. 14

D. 12

1. D 2. C 3. D 4. A 5. D

6. B 7. C 8. A 9. D 10. C

1. In an examination, a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. If he attempts all 80 questions and secures 120 marks, How many questions does he answer correctly?

A. 30

B. 60

C. 50

D. 40

2. There are two buildings P and Q. If 15 persons are sent from P to Q, then the number of persons in each building is the same. If 20 persons are sent from Q to P, then the number of persons in P is double the number of persons in Q. How many persons are there in building P?

A. 80

B. 140

C. 120

D. 90

3. John gets on the elevator at the 14th floor of a building and rides up at the rate of 84 floors per minute. At the same time, Vinod gets on an elevator at the 58th floor of the same building and rides down at the rate of 92 floors per minute. If they continue travelling at these rates, then at which floor will their paths cross?

A. 38

B. 36

C. 32

D. 35

4. An organization decided to raise Rs. 6 lakh by collecting equal contribution from each of its employees. If each of them had contributed Rs. 60 extra, the contribution would have been Rs. 6.24 lakh. How many employees are there in that organization?

A. 400

B. 300

C. 200

D. 100

5. In a garden, there are 10 rows and 12 columns of mango trees. The distance between the two trees is 2 metres and a distance of one metre is left from all sides of the boundary of the garden. What is the length of the garden?

A. 30 m

B. 28 m

C. 26 m

D. 24 m

6. If a - b = 6 and a2 + b2 = 116, then what is the value of ab?

A. 20

B. 40

C. 60

D. 80

7. 20 + 20 × 2 = ?

A. 40

B. 50

C. 60

D. 70

8. A fires 5 shots to B's 3 but A kills only once in 3 shots while B kills once in 2 shots. When B has missed 27 times, A has killed:

A. 30 birds

B. 22 birds

C. 18 birds

D. 38 birds

9. Free notebooks were distributed equally among children of a class. The number of notebooks each child got was one-eighth of the number of children. Had the number of children been half, each child would have got 16 notebooks. Total how many notebooks were distributed?

A. 602

B. 528

C. 423

D. 512

10. A boy was asked to multiply a number by 22. He instead multiplied the number by 44 and got the answer 308 more than the correct answer. What was the number to be multiplied?

A. 16

B. 10

C. 14

D. 12

**Answers :**1. D 2. C 3. D 4. A 5. D

6. B 7. C 8. A 9. D 10. C

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