Question

The pattern formed by all even numbers is represented by the expression

• A. $n$
• B. $2n$
• C. $2n+1$
• D. $2n+2$

Answer 1

The correct option is B

$2n$

Even numbers are divisible by 2.
So, all even numbers can be represented by $2\times n$; where n represents whole numbers 0, 1, 2, ...

[By substituing $n=0,1,2,...$ in $2n$, we get the set of all even numbers, which is, {0,2,4,6,....}].