Question 706329
#1 --- 2n+1
#2 --- 2n+3
#3 --- 2n+5

{{{(2n+3)(2n+5)-(2n+1)(2n+3)=50}}}
{{{(2n+3)(2n+5-2n-1)=50}}}
{{{4(2n+3)=50}}}
{{{8n+12=50}}}
n=6


The numbers are 13, 15, 17.