COOP COOP Mathematics Concepts 1 — Questions and Answers
Question 1: What is the least common multiple (LCM) of 4 and 6?
- 8
- 12 (Correct answer)
- 18
- 24
Correct answer: 12
The LCM of 4 and 6 is 12, the smallest number divisible by both.
Question 2: Which fraction is equivalent to 0.75?
- 1/4
- 2/3
- 3/4 (Correct answer)
- 4/5
Correct answer: 3/4
0.75 equals 75/100, which simplifies to 3/4.
Question 3: A rectangle has a length of 9 cm and a width of 5 cm. What is its area?
- 28 cm²
- 40 cm²
- 45 cm² (Correct answer)
- 50 cm²
Correct answer: 45 cm²
Area of a rectangle = length × width = 9 × 5 = 45 cm².
Question 4: What is 15% of 80?
- 10
- 12 (Correct answer)
- 15
- 16
Correct answer: 12
15% of 80 = 0.15 × 80 = 12.
Question 5: If a bag has 3 red marbles, 5 blue marbles, and 2 green marbles, what is the probability of picking a blue marble?
- 1/2 (Correct answer)
- 1/3
- 1/5
- 3/10
Correct answer: 1/2
There are 5 blue marbles out of 10 total, so the probability is 5/10 = 1/2.
Question 6: What is the value of 2³ + 3²?
- 13
- 17 (Correct answer)
- 25
- 36
Correct answer: 17
2³ = 8 and 3² = 9, so 8 + 9 = 17.
COOP COOP Mathematics Concepts 1
What is the least common multiple (LCM) of 4 and 6?