Correct Answer - Option 1 : 25

**Given:**

Numbers = 23, 42, 15, 20 and 25.

**Formula:**

Average = Sum of terms/Number of terms

**Calculation:**

Total sum of numbers,

⇒ 23 + 42 + 15 + 20 + 25 = 125

Number of numbers = 5

⇒ ** **Average = 125/5

⇒ Average = 25

**∴ The average is 25.**