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Real Numbers MCQs Class 8. We covered all the Real Numbers MCQs Class 8 in this post for students to practice mathematics bits completely free.
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Real Numbers MCQs Class 8 for Students
Quick Quiz
Which of the following sets forms an abelian group under multiplication?
a. Z
b. W
c. Q
d. N
Option c – Q
Which set is a commutative group when the operation is addition?
a. N
b. Z
c. W
d. None of these
Option b – Z
What conditions must a non-empty set meet to be considered a field?
a. It must be an abelian group under addition
b. It must be an abelian group under multiplication
c. Multiplication must be distributive over addition
d. All of the above
Option d – All of the above
A natural number greater than 1, having only 1 and itself as factors, is called a:
a. Prime number
b. Composite number
c. Odd number
d. Even number
Option a – Prime number
A natural number greater than 1 that is not prime is called a:
a. Even number
b. Odd number
c. Composite number
d. Any number
Option c – Composite number
Which statement below is correct?
a. All even numbers are composite numbers
b. All odd numbers are prime numbers
c. Composite numbers have at least three factors
d. A prime number can be expressed as a product of more than two natural numbers
Option c – Composite numbers have at least three factors
Which of these statements is incorrect?
a. Z belongs to the set of whole numbers
b. The number opposite to -11 and equally distant from 0 is 11
c. Subtracting an integer is the same as adding its additive inverse
d. The product of a positive and a negative integer is a negative integer
Option a – Z belongs to the set of whole numbers
If x < 15, what is the absolute value of (2x – 20) – (x – 5)?
a. x – 15
b. x + 15
c. 15 – x
d. – (x + 15)
Option c – 15 – x
Which of the following sets is an ordered field?
a. N
b. W
c. Z
d. Q
Option d – Q
Which set forms a group under addition?
a. N
b. W
c. Z
d. All of the above
Option c – Z
What is the result of adding two odd numbers?
a. An even number
b. An odd number
c. A composite number
d. A prime number
Option a – An even number
The sum of one odd number and one even number is:
a. An even number
b. An odd number
c. A composite number
d. A prime number
Option b – An odd number
What do you get when two odd numbers are multiplied?
a. An even number
b. A prime number
c. An odd number
d. None of these
Option c – An odd number
What is the result of multiplying an even number with an odd number?
a. An odd number
b. An even number
c. A prime number
d. All of these
Option b – An even number
What is the sum of four consecutive natural numbers a, b, c, d?
a. An odd number
b. An even number
c. A prime number
d. Any number
Option b – An even number
If a, b, c are three consecutive natural numbers, then (a+1)(b+1)(c+1) is:
a. An odd number
b. A prime number
c. An even number
d. An odd composite number
Option c – An even number
If a, b, c are three consecutive natural numbers, then abc + 1 is:
a. An odd number
b. An even number
c. A prime number
d. An even composite number
Option a – An odd number
The result of 37 + 8 + 5 + 16 + 32 + 7 + 5 + 19 is:
a. An odd number
b. An even number
c. A prime number
d. Either odd or even
Option b – An even number
If a, c, e, g are four odd numbers and b, d, f, h are four even numbers, then the sum a+b+c+d+e+f+g+h is:
a. An odd number
b. An even number
c. A prime number
d. Either odd or even
Option b – An even number
In which of the following sets does 0 (zero) not appear?
a. N
b. W
c. Z
d. Q
Option a – N
Numbers that give a remainder of 0 when divided by 2 are called:
a. Odd numbers
b. Prime numbers
c. Composite numbers
d. Even numbers
Option d – Even numbers
Numbers that leave a remainder of 1 when divided by 2 are known as:
a. Even numbers
b. Composite numbers
c. Odd numbers
d. Prime numbers
Option c – Odd numbers
What is the result when an even number is subtracted by an odd number?
a. An odd number
b. A prime number
c. An even number
d. A composite number
Option a – An odd number
What is the result of subtracting one odd number from another?
a. An odd number
b. A composite number
c. An even number
d. A prime number
Option c – An even number
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