(4) Let the five consecutive even numbers be x, x + 2, x + 4, x + 6 and x + 8 respectively. According to the question, x + x+ 2 + x + 4 + x + 6 + x + 8 = 5 × 52 => 5x+ 20 = 260 ⇒5x =260−20⇒x=
240
5
=48 ∴ B = x + 2 = 48 + 2 = 50 E = x + 8 = 48 + 8 = 56 ∴B×E=50×56=2800