Whole Numbers - Free MCQ Test with solutions, Class 6 1000+ Questions

In the set of whole numbers, each number has a successor and predecessor except for zero. Zero is the first whole number, and:

• Subtracting one from zero results in -1, which is not a whole number.
• Therefore, 0 does not have a predecessor.

The smallest whole number is 0 because:

• In the set of whole numbers, which includes all non-negative integers,
• Zero is the least element.

Therefore, option (b) is correct.

The option (c) is the correct answer.

We know that

1 million = 1,000,000

So the successor of 1 million = 1,000,000 + 1 = 1,000,001

The option (a) is the correct answer.

For Example-

Consider whole number = 1

So the successor of 1 = 1 + 1 = 2

Product between them = 1 × 2 = 2

Hence, 2 is an even number.

The option (d) is the correct answer.

For example-

Consider an even natural number = 2

So the predecessor of 2 = 2 − 1 = 1

We get the successor of 2 = 2 + 1 = 3

Product between them = 1 × 3 = 3

Hence, the product is an odd number.

 There is no predecessor for natural number 1. As natural number starts from 1

The option (b) is the correct answer.

We know that we get multiples by multiplying the number by any number.

Hence, every counting number has an infinite number of multiples

Answer: b) 10
Explanation: The first five whole numbers are 0, 1, 2, 3, and 4. Their sum is 0 + 1 + 2 + 3 + 4 = 10

Concept:

Counting the whole numbers within the given range.

Solution:

⇒ The sequence of whole numbers between 0 and 10 is: 1, 2, 3, 4, 5, 6, 7, 8, 9

⇒ We simply need to count these numbers.

⇒ There is 1 one. ⇒ There is 1 two. ⇒ There is 1 three. ⇒ There is 1 four. ⇒ There is 1 five. ⇒ There is 1 six. ⇒ There is 1 seven. ⇒ There is 1 eight. ⇒ There is 1 nine.

by adding all the counts, we get 9 whole numbers between 0 and 10.

Hence, the correct answer is "9".

We know that the factors of

91 = 1 × 7 × 13

81 = 1 × 3 × 3 × 3 × 3

87 = 1 × 3 × 29

97 = 1 × 97

Hence, 81, 87 and 91 are not prime numbers.

There 29 numbers between 38 and 68 . Hence the number of whole numbers between 38 and 68 are 29
use m - n - 1 for finding no of terms
= 68 - 38 - 1 = 29

The calculation for the product of Successor and Predecessor is as follows:

• Successor = 1000
• Predecessor = 998
• Product = 1000 × 998 = 998000

Let the whole number be x
According to the question
= x + 25 + 25 - x
= 50

Product of the predecessor and successor of an odd natural number is always divisible by 2 and 4.

Step-by-step explanation:

• Any odd Natural Number can be written as 2n+1, where n is any natural number(n= 1,2,3,..........).
• Predecessor of (2n + 1) = (2n+1)−1 = 2n

• Successor  of (2n + 1)   = (2n+1) + 1

                     =2n+2

• Product  of the Predecessor and Successor = 2n.(2n+2)

                                                                         =2n.2(n+1)

                                                                         =4.n(n+1)

As n= {1,2,3,4........}

 4.n(n+1) is a natural number and can be expressed as a multiple of 4.

Any multiple of 4 is divided by 2 and 4.

• Hence, product of the predecessor and successor of an odd natural number is always divisible by 2 and 4.

• 1 is also an odd natural number whose predecessor is 0 and successor is 2 . Their product is 0.

     0 divided by any number is 0.