General Quantitative Aptitude Basics 5 — Questions and Answers
Question 1: What is the median of the data set: 7, 15, 3, 22, 9, 11, 5?
- 7
- 9 (Correct answer)
- 11
- 15
Correct answer: 9
Sorted: 3,5,7,9,11,15,22 — the middle (4th) value is 9.
Question 2: Two angles of a triangle are 45° and 75°. What is the third angle?
- 50°
- 55°
- 60° (Correct answer)
- 65°
Correct answer: 60°
Angles in a triangle sum to 180°; third angle = 180 − 45 − 75 = 60°.
Question 3: If a number is increased by 40% and then decreased by 40%, what is the net change?
- 0%
- −4%
- −16% (Correct answer)
- −20%
Correct answer: −16%
1.4 × 0.6 = 0.84, meaning the number is 84% of the original — a 16% decrease.
Question 4: What is the HCF (GCD) of 72 and 96?
- 12
- 18
- 24 (Correct answer)
- 36
Correct answer: 24
72 = 2³×3², 96 = 2⁵×3; HCF = 2³×3 = 24.
Question 5: A circle has a radius of 7 cm. What is its circumference? (Use π ≈ 22/7)
- 38 cm
- 42 cm
- 44 cm (Correct answer)
- 48 cm
Correct answer: 44 cm
Circumference = 2πr = 2 × (22/7) × 7 = 44 cm.
Question 6: If the simple interest on $2,000 at 5% per year for 3 years is calculated, what is the total amount owed?
- $2,200
- $2,250
- $2,300 (Correct answer)
- $2,350
Correct answer: $2,300
Simple interest = P×R×T = 2000×0.05×3 = $300; total = $2,000 + $300 = $2,300.
Question 7: What is the next number in the sequence: 2, 6, 18, 54, ___?
- 108
- 144
- 162 (Correct answer)
- 216
Correct answer: 162
Each term is multiplied by 3; 54 × 3 = 162.
General Quantitative Aptitude Basics 5
What is the median of the data set: 7, 15, 3, 22, 9, 11, 5?