0+-2+3 - its that easy
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EVERY three consecutive numbers add to a multiple of 3: Proof: numbers are n, n + 1 and n + 2. The total is 3n + 3 or 3(n + 1) This means that for any three consecutive numbers, the total is 3 times the middle number.
The mean times three will be the total of all three numbers. Multiply the mean times three and subtract the sum of the two numbers from that total.
1+1+17
nine, ten and eleven. Three consecutive numbers that total thirty
Let the numbers be 'n' , 'n+1' & 'n+2' Hence adding n + n+1 + n + 2 = 120 3n + 3 = 120 3n = 117 n = 39 Hence n + 1 = 40 n + 2 = 41 So the three consecutive numbers are ;- 39,40,& 41.