CSS - PMS - CCE - PCS - Mathematics
Age Problems
A father is three times as old as his son. Their present ages total 48 years. What is the father's age?
A. 36
B. 34
C. 40
D. 32
Correct Answer: A
Let the son's age be x. Father's age = 3x. Thus 4x = 48, so x = 12 and the father is 36 years old.
CSS - PMS - CCE - PCS - Mathematics
The sum of first five natural numbers is:
A. 10
B. 12
C. 15
D. 20
Correct Answer: C
C: Correct because 1+2+3+4+5 equals 15. A: Wrong because 10 misses 5. B: Wrong because 12 is incorrect addition. D: Wrong because 20 is too high.
CSS - PMS - CCE - PCS - Mathematics
The value of 0.5 as a fraction is:
A. 1/5
B. 1/2
C. 2/5
D. 5/10 only
Correct Answer: B
B: Correct because 0.5 is exactly one-half in simplest form. A: Wrong because 1/5 equals 0.2. C: Wrong because 2/5 equals 0.4. D: Wrong because 5/10 equals 0.5 but is not in simplest form.
CSS - PMS - CCE - PCS - Mathematics
Profit & Loss
If 5 pencils cost Rs. 50, one pencil costs:
A. Rs. 5
B. Rs. 10
C. Rs. 15
D. Rs. 20
Correct Answer: B
B: Correct because 50 divided by 5 equals Rs. 10. A: Wrong because Rs. 5 would total Rs. 25. C: Wrong because Rs. 15 would total Rs. 75. D: Wrong because Rs. 20 would total Rs. 100.
CSS - PMS - CCE - PCS - Mathematics
The median of 3, 7, 9 is:
A. 3
B. 7
C. 9
D. 19
Correct Answer: B
B: Correct because the middle value in ordered data 3,7,9 is 7. A: Wrong because 3 is the smallest value. C: Wrong because 9 is the largest value. D: Wrong because 19 is the sum, not median.
CSS - PMS - CCE - PCS - Mathematics
A number divisible by 2 is called:
A. Odd
B. Even
C. Prime only
D. Composite only
Correct Answer: B
B: Correct because even numbers are divisible by 2. A: Wrong because odd numbers are not divisible by 2. C: Wrong because some even numbers are prime only for 2, not all. D: Wrong because not all even numbers must be categorized only as composite.
CSS - PMS - CCE - PCS - Mathematics
The sum of first five natural numbers is:
A. 10
B. 12
C. 15
D. 20
Correct Answer: C
C: Correct because 1+2+3+4+5 equals 15. A: Wrong because 10 misses 5. B: Wrong because 12 is incorrect addition. D: Wrong because 20 is too high.
CSS - PMS - CCE - PCS - Mathematics
The value of 0.5 as a fraction is:
A. 1/5
B. 1/2
C. 2/5
D. 5/10 only
Correct Answer: B
B: Correct because 0.5 is exactly one-half in simplest form. A: Wrong because 1/5 equals 0.2. C: Wrong because 2/5 equals 0.4. D: Wrong because 5/10 equals 0.5 but is not in simplest form.
CSS - PMS - CCE - PCS - Mathematics
Profit & Loss
If 5 pencils cost Rs. 50, one pencil costs:
A. Rs. 5
B. Rs. 10
C. Rs. 15
D. Rs. 20
Correct Answer: B
B: Correct because 50 divided by 5 equals Rs. 10. A: Wrong because Rs. 5 would total Rs. 25. C: Wrong because Rs. 15 would total Rs. 75. D: Wrong because Rs. 20 would total Rs. 100.
CSS - PMS - CCE - PCS - Mathematics
The median of 3, 7, 9 is:
A. 3
B. 7
C. 9
D. 19
Correct Answer: B
B: Correct because the middle value in ordered data 3,7,9 is 7. A: Wrong because 3 is the smallest value. C: Wrong because 9 is the largest value. D: Wrong because 19 is the sum, not median.
CSS - PMS - CCE - PCS - Mathematics
A number divisible by 2 is called:
A. Odd
B. Even
C. Prime only
D. Composite only
Correct Answer: B
B: Correct because even numbers are divisible by 2. A: Wrong because odd numbers are not divisible by 2. C: Wrong because some even numbers are prime only for 2, not all. D: Wrong because not all even numbers must be categorized only as composite.
CSS - PMS - CCE - PCS - Mathematics
Square
The value of 2^5 is:
A. 10
B. 16
C. 25
D. 32
Correct Answer: D
D: Correct because 2 to the power 5 means 2 x 2 x 2 x 2 x 2 = 32. A: Wrong because 10 is 2 x 5. B: Wrong because 16 is 2^4. C: Wrong because 25 is 5^2.
CSS - PMS - CCE - PCS - Mathematics
HCF and LCM
The LCM of 4 and 6 is:
A. 8
B. 10
C. 12
D. 24 only
Correct Answer: C
C: Correct because 12 is the smallest number divisible by both 4 and 6. A: Wrong because 8 is not divisible by 6. B: Wrong because 10 is not divisible by 4 or 6. D: Wrong because 24 is a common multiple but not the least.
CSS - PMS - CCE - PCS - Mathematics
HCF
The HCF of 12 and 18 is:
A. 2
B. 3
C. 6
D. 9
Correct Answer: C
C: Correct because 6 is the greatest common factor of 12 and 18. A: Wrong because 2 is common but not greatest. B: Wrong because 3 is common but not greatest. D: Wrong because 9 does not divide 12.
CSS - PMS - CCE - PCS - Mathematics
TimeSpeed & Distance
If a train travels 60 km in 1 hour, its speed is:
A. 30 km/h
B. 60 km/h
C. 90 km/h
D. 120 km/h
Correct Answer: B
B: Correct because speed equals distance divided by time, so 60/1 = 60 km/h. A: Wrong because 30 km/h would take 2 hours. C: Wrong because 90 km/h is too high. D: Wrong because 120 km/h is double the speed.
CSS - PMS - CCE - PCS - Mathematics
Number System
The next number in the sequence 2, 4, 8, 16 is:
A. 18
B. 24
C. 30
D. 32
Correct Answer: D
D: Correct because each term doubles, so after 16 comes 32. A: Wrong because 18 adds 2 only. B: Wrong because 24 adds 8 but breaks doubling. C: Wrong because 30 does not follow doubling.
CSS - PMS - CCE - PCS - Mathematics
Percentage
What is 3/4 as a percentage?
A. 25%
B. 50%
C. 75%
D. 100%
Correct Answer: C
C: Correct because 3 divided by 4 equals 0.75 or 75 percent. A: Wrong because 25% equals 1/4. B: Wrong because 50% equals 1/2. D: Wrong because 100% equals one whole.
CSS - PMS - CCE - PCS - Mathematics
Rectangle
The area of a rectangle of length 8 and width 3 is:
A. 11
B. 22
C. 24
D. 64
Correct Answer: C
C: Correct because area equals length x width = 8 x 3 = 24. A: Wrong because 11 is length plus width. B: Wrong because 22 is not the product. D: Wrong because 64 is 8 squared.
CSS - PMS - CCE - PCS - Mathematics
Simplification
The value of 7 x 8 is:
A. 54
B. 56
C. 58
D. 64
Correct Answer: B
B: Correct because 7 multiplied by 8 equals 56. A: Wrong because 54 is too low. C: Wrong because 58 is too high. D: Wrong because 64 is 8 x 8.
CSS - PMS - CCE - PCS - Mathematics
Ratio & Proportion
If a:b = 2:3 and b = 9, then a is:
A. 4
B. 6
C. 8
D. 12
Correct Answer: B
B: Correct because 2:3 means a is 2/3 of 9, which equals 6. A: Wrong because 4 is not proportional to 9 in 2:3. C: Wrong because 8 gives 8:9, not 2:3. D: Wrong because 12 gives 12:9, not 2:3.