Correct Answer - Option 2 : 12

**Given**

Number is consecutive and their sum is 42

**Concept used**

Consecutive numbers concept used

**Calculation**

Let the numbers be x, x+1, x+2, x+ 3

⇒ Their sum is 42

⇒ 4x + 6 = 42

⇒ 4x = 36

⇒ x = 9

**∴ Largest number is 9 + 3 = 12**