Possible student responses

• The numbers are in order from least to greatest.
• The first number is odd, the second number is even, the third number is odd, the fourth number is even, and so on.
• The differences between the numbers are odd: 3, 5, 7, 9, and 11.
• The difference between the numbers increases by 2 each time.
• The next two numbers would be 49 and 64.
• The numbers are square numbers, and they can be found by multiplying each counting number by itself:
  • 1 X 1 = 2
  • 2 X 2 = 4
  • 3 X 3 = 9, and so on.