Mathematics — All MCQs

1905 questions available

Showing 1681–1700 of 1905

Q1681.What is the value of sin(30°)?

Medium
A 1/2
B 3.2
C 1
D 0
General MCQs PPSC

Correct Answer: A

In trigonometry, the sine of 30 degrees is exactly 1/2 or 0.5.

Q1682.Find the determinant of the 2x2 matrix with row 1 as [1, 3] and row 2 as [2, 4].

Medium
A 4
B 2
C -2
D 6
General MCQs PPSC

Correct Answer: C

Determinant = ad - bc = (1 × 4) - (3 × 2) = 4 - 6 = -2.

Q1683.Evaluate: 2 × (5 - 3) × 5

Medium
A 20
B 10
C 25
D 30
Percentage, Ratio & Average PPSC

Correct Answer: A

Following order of operations: 2 × (2) × 5 = 4 × 5 = 20.

Q1684.A man buys a goat for Rs. 25,000 and sells it for Rs. 28,500. What is the profit percentage?

Medium
A 14%
B 10%
C 12%
D 20%
Percentage, Ratio & Average PPSC

Correct Answer: A

Profit = 28500 - 25000 = 3500. Profit % = (3500 / 25000) × 100 = 14%.

Q1685.A car covers 150 km in 3 hours. What is its average speed?

Medium
A 50 km/h
B 60 km/h
C 70 km/h
D 40 km/h
Time, Work & Speed PPSC

Correct Answer: A

Average Speed = Distance / Time = 150 km / 3 hours = 50 km/h.

Q1686.If A = 1 and H = 8, then what is the value of A + H - 2?

Medium
A 7
B 6
C 8
D 10
Algebra PPSC

Correct Answer: A

Substituting the values: A + H - 2 = 1 + 8 - 2 = 7.

Q1687.What is the result of 9 × 8 - 5?

Medium
A 72
B 67
C 70
D 69
Algebra PPSC

Correct Answer: B

Multiplication before subtraction: 9 × 8 - 5 = 72 - 5 = 67.

Q1688.What is 10% of 450?

Medium
A 45
B 50
C 55
D 40
Percentage, Ratio & Average PPSC

Correct Answer: A

10% of 450 = (10/100) × 450 = 45.

Q1689.What is the value of 3/5 − 4/5?

Medium
A 1/5
B -1/5
C 7/10
D -7/10
Basic Arithmetic PPSC

Correct Answer: B

(3 - 4) / 5 = -1/5.

Q1690.Simplify: x + x - 2 =?

Medium
A 2x - 2
B x² - 2
C 2x + 2
D x - 2
Algebra PPSC

Correct Answer: A

Combine like terms: x + x - 2 = 2x - 2.

Q1691.Evaluate: log 3 + log 6 - log 5 =?

Medium
A log(18/5)
B log(9/5)
C log(6)
D log(15/2)
General MCQs PPSC

Correct Answer: A

Using log properties: log 3 + log 6 = log(18). Then log(18) - log 5 = log(18 / 5).

Q1692.Evaluate: 1397 × 1397

Medium
A 1951609
B 19516
C 19671609
D
General MCQs PPSC

Correct Answer: A

1397² = 1,951,609.

Q1693.Evaluate: 1.8 × 1.5

Medium
A 2
B 2.7
C 3
D None of these
Basic Arithmetic PPSC

Correct Answer: B

1.8 × 1.5 = 2.7.

Q1694.If a car moves at 70 km/h, what is the time taken to cover 14 km?

Medium
A 10 min
B 12 min
C 15 min
D 20 min
Time, Work & Speed PPSC

Correct Answer: B

Time = Distance / Speed = 14 / 70 = 0.2 hours. In minutes: 0.2 × 60 = 12 minutes.

Q1695.If a product is Rs. 500 net of a 3% discount, what is its gross price?

Medium
A 515.46
B 485
C 503
D 525
Profit, Loss & Interest PPSC

Correct Answer: A

Gross Price = Net Price / (1 - Discount Rate) = 500 / (1 - 0.03) = 500 / 0.97 ≈ Rs. 515.46.

Q1696.What is the average of 14.5, 15.5, and 16.5?

Medium
A 14.5
B 15
C 15.5
D 16
Percentage, Ratio & Average PPSC

Correct Answer: C

Sum = 14.5 + 15.5 + 16.5 = 46.5. Average = 46.5 / 3 = 15.5.

Q1697.In a right triangle with angles of 90° and 30°, what is the third angle?

Medium
A 45°
B 60°
C 75°
D 30°
Geometry & Mensuration PPSC

Correct Answer: B

The sum of angles in a triangle is always 180°. Third angle = 180° - 90° - 30° = 60°.

Q1698.Solve for X: X/12 = -3

Medium
A -15
B -24
C -36
D -48
Algebra PPSC

Correct Answer: C

Multiplying both sides by 12 yields X = -3 × 12 = -36.

Q1699.What is 3/4 in decimal form?

Medium
A 0.25
B 0.5
C 0.75
D 0.33
Basic Arithmetic PPSC

Correct Answer: C

3 divided by 4 is 0.75.

Q1700.What is tan(45°) equal to?

Medium
A 1
B 0.5
C -1
D None of these
General MCQs PPSC

Correct Answer: A

By standard trigonometric unit values, the tangent of 45 degrees is exactly 1.