6, 8, 10.
102 is 100. Subtract 52 from that, and you get 48, which is 6.8
Method: call the smaller of the unknown even numbers n. Then, from the problem statement, n(n+2) + 52 = (n + 4)2. Multiplying out yields n2 + 2n + 52 = n2 + 8n + 16. Collecting like terms from both sides yields 6n = 36 or n = 6.
5, 6 and 7
8, 9, and 10
12, 13 and 14
14, 15, 16
8, 10, 12
Find 3 consecutive numbers where the product of the smaller two numbers is 19 less than the square of the largest number.
5,6,7
11,12,13
8,10,12
5, 6 and 7
8, 9, and 10
16, 17 and 18
12, 13 and 14
1, 3, 5
14, 15, 16
4, 6, and 8
8, 10, 12