Correct Answer - Option 2 : 23

**Given:**

The average of 6 consecutive odd numbers is 28.

**Formula used:**

Average = Sum of observation/Total number of observation

**Calculation:**

Let the smallest number is x,

So, rest of the number will be (x + 2), (x + 4), (x + 6), (x + 8), (x + 10)

⇒ x + x + 2 + x + 4 + x + 6 + x + 8 + x + 10 = 28 × 6

⇒ 6x + 30 = 168

⇒ 6x = 138

⇒ x = 23

**∴ The smallest number is 23.**