The mean of 20 numbers is 35. If four numbers 24, 20, 21 and 27 are

Explanation

⇒ Mean of 20 numbers = 35 ⇒ Sum of 20 numbers = 20 × 35 = 700 ⇒ Sum of numbers removed = (24 + 20 + 21 + 27) = 92 ⇒ Sum of remaining 16 numbers = 700 - 92 = 608 ⇒ New mean = New Sum /New Total Number ⇒ New mean = 608 / 16 ∴ Mean of remaining numbers is 38