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MCQ Practice

Mathematics MCQs

If the ratio of two numbers is 3:4 and their sum is 28, what are the numbers?

• A. 10, 18
• B. 12, 16
• C. 14, 14
• D. 8, 20

Explanation:
Total parts = 7 ⇒ each part = 4 ⇒ numbers = 12 and 16.

An obtuse angle is ____.

• A. < 90°
• B. = 90°
• C. > 90°
• D. = 180°

Explanation:
Between 90° and 180°.

An acute angle is ____.

• A. < 90°
• B. = 90°
• C. > 90°
• D. = 180°

Explanation:
Acute angle definition.

A right angle measures ____.

• A. 45°
• B. 60°
• C. 90°
• D. 120°

Explanation:
Definition of right angle.

The number of diagonals in a square is ____.

• A. 1
• B. 2
• C. 3
• D. 4

Explanation:
A square has 2 diagonals.

The number of sides in a hexagon is ____.

• A. 4
• B. 5
• C. 6
• D. 7

Explanation:
A hexagon has 6 sides.

The surface area of a cube of side 4 cm is ____.

• A. 64
• B. 96
• C. 128
• D. 256

Explanation:
6a² = 96.

The volume of a cuboid 10×5×2 cm is ____.

• A. 50
• B. 75
• C. 100
• D. 120

Explanation:
Volume = l×b×h.

The volume of a cube of side 5 cm is ____.

• A. 100
• B. 125
• C. 150
• D. 175

Explanation:
Volume = 5³ = 125.

The diagonal of a square is 10 cm. What is its side?

• A. 5
• B. 6
• C. 7
• D. 5√2

Explanation:
Side = diagonal/√2.