First name
loee
Country
Age
12
all of the numbers add up in sequences in the three times tables, so 1, 4, 7, and 10 all success the previous number by 3, so you know it is in the 3x tables, but 3x + 1. Because you are adding up 3 of the numbers,it becomes 3(3x + 1), which equals 9x + 3. the 9x is in the 3x tables, and the added 3 is also part of the three times tables, therefore adding it altogether to a number in the 3x tables