Question

Which of the following option is the incorrect statement?

• A. Every natural number is a multiple of 1
• B. Every number is a multiple of itself
• C. Every number is a multiple of 1
• D. 1 is a factor of every number

Answer 1

The correct option is C Every number is a multiple of 1

1. Every natural number is a multiple of 1
2. Every natural number is a multiple of itself
3. 1 is a factor of every number
The above three statements are correct

Let's see through an example
2, 3, 5, 6,....are the natural numbers
$2=1\times 2$
$\Rightarrow$ 2 is a multiple of 1, thus every natural number is a multiple of 1

$\Rightarrow$ 2 is a multiple of 2, thus every natural number is a multiple of itself

$\Rightarrow$ 1 is a factor of 2, thus every natural number has a factor 1

4. The numbers do not have the multiples of 1
$1\ne 2\times$ natural number
We cannot have the product 1 when any number multiplied with any number
Thus, Every number is a multiple of 1 is a false statement

$\therefore$ Option C is the correct answer