Average of five numbers = 61 The sum of five numbers = 61 × 5 = 305 The sum of the first and the third number = 69 × 2 = 138 The sum of the second and the fourth number = 69 × 2 = 138 Fifth number = (Total number- Sum of the first and third and the second and fourth numbers) = 305 - (138 + 138) = 305 - 276 = 29