Question

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

• A. 2n
• B. 2n + 1
• C. 2n + 3
• D. 2n + 5

Answer 1

The correct option is A 2n

Even numbers are divisible by 2.
So, all even numbers can be represented by 2 $\times$ n; where n represents natural numbers 1, 2....
$\therefore$ 2n gives the pattern formed by even numbers.
For n=1, 2n = 2 $\times$ 1 = 2
For n=2, 2n = 2 $\times$ 2 = 4
For n=3, 2n = 2 $\times$ 3 = 6.
So, it is clear that 2n is the correct option.