#math trivia for #February25: #56 is a product of consecutive numbers: 56 = 7*8. And 56 = ((7+8)^2)-1)/4. What’s the general formula? — Burt Kaliski Jr. (@modulomathy) February 25, 2012 Replacing 7 with x and 8 with x+1 gives the general formula x(x+1) = ((x+(x+1))2-1)/4. Replacing x+(x+1) with 2x+1 on the right hand side gives … Continue reading