Q81. If x + y = 10 and x - y = -6, find x.
- 2
- 1
- 3
- 8
Show answer and explanation
Correct answer: A. 2
Adding the equations: 2x = 4; x = 2.
PPSC / FPSC Mathematics MCQs with Answers
85 practice MCQs on Mathematics for PPSC / FPSC tests. Think of your answer first, then open "Show answer and explanation". These are practice questions, not official examination papers.
Q82. A bus covers 180 km in 6 hours. What is its average speed in km/h?
- 40
- 25
- 35
- 30
Show answer and explanation
Correct answer: D. 30
Speed = 180/6 = 30 km/h.
Q83. If 10% of a number is 150, what is the number?
- 1520
- 3000
- 1500
- 1480
Show answer and explanation
Correct answer: C. 1500
Number = 150 x 100/10 = 1500.
Q84. What is the cube of 9?
- 738
- 729
- 810
- 720
Show answer and explanation
Correct answer: B. 729
9^3 = 729.
Q85. What is the LCM of 16 and 8?
- 16
- 24
- 8
- 32
Show answer and explanation
Correct answer: A. 16
LCM = (x*y)/HCF = 128/8 = 16.
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