Real Numbers MCQs Class 8

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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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Class 8th Real Numbers Practice Bits for School Students

The set which is an abelian group under multiplication, is :

1. Z

2. W

3. Q

4. N

Option 3 – Q

The set which is a commutative group under addition is :

1. N

2. Z

3. W

4. none of these

Option 2 – Z

The properties which a non-empty set should satisfy in order to be a field :

1. It should be an abelian group under addition

2. It should he an abelean group under multiplication

3. It should satisfy multiplication distrbutive property over addition

4. all of these

Option 4 – all of these

A natural number other than 1 is said to be number if it has no factors other than 1 and itself :

1. prime number

2. a composite number

3. an odd number

4. an even number

Option 1 – prime number

A natural number other than 1 which is not a prime number is said to be…

1. an even number

2. on odd number

3. a composite number

4. any number

Option 3 – a composite number

Which of the following is a true statement?

1. All even numbers are composite numbers

2. All odd numbers are prime numbers

3. composite numbers will have at least three factors

4. A prime number can be written as the product of more than two natural numbers.

Option 3 – composite numbers will have at least three factors

Which of the following is a false statement?

1. Z is in the set of whole numbers

2. number that is exactly oposite in sign to-11 and equidistant from “O” on number line is 11.

3. the subtraction of an integer is equivalent to the addition of the additive inverse of the integer.

4. the product of a positive integer and a negative integer is negative integer.

Option 1 – Z is in the set of whole numbers

If x<15, then the absolute value of (2x-20) – (x-5) is :

1. x-15

2. x+15

3. 15-x

4. -(x+15)

Option 3 – 15-x

Which of the following is an ordered field?

1. N

2. W

3. Z

4. Q

Option 4 – Q

The set which is a group under the operation ‘addition’, is :

1. N

2. W

3. Z

4. all of these

Option 3 – Z

The slim of two odd numbers is :

1. an even number

2. an odd number

3. a composite number

4. a prime number

Option 1 – an even number

The sum of an odd and an even number is number :

1. an even

2. an odd number

3. a composite number

4. a prime number

Option 2 – an odd number

The product of two odd numbers is”

1. an even number

2. a prime number

3. an odd number

4. none of these

Option 3 – an odd number

The product of an even number and an odd number is :

1. an odd number

2. an even number

3. a prime number

4. all of these

Option 2 – an even number

If a, b, c, d are any four consecutive natural numbers, then their sum is :

1. an odd number

2. an even number

3. a prime number

4. any number

Option 2 – an even number

If a, b, c are any three consecutive natural numbers, then (a+1) (b+1) (c+1), is

1. an odd number

2. a prime number

3. an even number

4. an odd composite number

Option 3 – an even number

If a, b, c are any three consecutive natural numbers, then abc+1 is :

1. an odd number

2. an even number

3. a prime number

4. an even composite number

Option 1 – an odd number

37+8+5+16+32+7 +5+19 is :

1. an odd number

2. an even number

3. a prime number

4. an odd or even

Option 2 – an even number

If a,c,e,g are any four odd numbers and b,d,f,h are any four even numbers, then a+b+c+d+e+f+g+h, is :

1. an odd number

2. an even a number

3. a prime number

4. an odd or even

Option 2 – an even a number

The set of numbers to which ‘0’ (zero) does not belong to, is :

1. N

2. W

3. Z

4. Q

Option 1 – N

The numbers which leave a remainder 0 when divided by 2 are called :

1. odd numbers

2. prime numbers

3. composite numbers

4. even numbers

Option 4 – even numbers

The numbers which leave a remainder ‘1’ when divided by 2 are called…

1. even number

2. composite numbers

3. odd numbers

4. prime numbers

Option 3 – odd numbers

The difference of an even number and an odd number :

1. an odd number

2. a prime number

3. an even number

4. a composite number

Option 1 – an odd number

The difference of two odd numbers is :

1. an odd number

2. a composite number

3. an even number

4. a prime number

Option 3 – an even number

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