1. Mike handed back the sheet of paper. “Those two serial numbers?” he said. “I see no connection between them except that both have eight digits.” Joe replied, “If you take the last three digits of the smaller one and put them in front of the others, you get the other number. And that’s just one less than three times the smaller number.” What was that smaller number?

Smaller number is 62239816

Smaller number is 24174725

Smaller number is 43288417