MCQ Practice – Class 6 to 10

Q1. If a number has factor 2 and 5 both, its decimal expansion:

A. None B. Always repeats C. Always terminates D. Never terminates

Q2. The fundamental theorem of arithmetic states that:

A. Every composite number has a unique prime factorization B. Every rational number is repeating C. Every number is irrational D. Every prime is even

Q3. The number 1 is:

A. Irrational B. Neither prime nor composite C. A prime D. A composite

Q4. Which of the following is NOT a real number?

A. √5 B. 3/7 C. √−4 D. √9

Q5. Which of the following is an irrational number?

A. √2 B. 0.121212… C. 22/7 D. 5/9

Q6. Which of the following is an irrational number?

A. 0.444… B. 0.75 C. √11 D. 4/9

Q7. The number of primes between 1 and 20 is:

A. 8 B. 5 C. 6 D. 7

Q8. The value of √50 is equal to:

A. 25√2 B. 2√5 C. 10√2 D. 5√2

Q9. The value of √75 is:

A. 15√5 B. 3√5 C. 5√2 D. 5√3

Q10. The LCM of 4, 6 and 8 is:

A. 12 B. 36 C. 48 D. 24

Quiz – Real Numbers