A: Row 7

Correct Response

• Correct terms of sequence (1, 3, 5, 7, 9, 11, 13) and sum 49

Incorrect Responses

• Terms of sequence with no sum given
• Sum (49) without terms of sequence
• Terms of sequence with incorrect sum given (e.g., 39)
• Terms and sum for row 6 given (e.g., 1, 3, 5, 7, 9, 11 = 36)
• Other incorrect

B: Row 20

Correct Response

• 400 or 20 x 20

Incorrect Responses

• 40
• Other incorrect

C: Row n

Correct Responses

• n2 or n x n
• Equivalent in words (e.g., number of row times itself)

Incorrect Responses

• n x 2
• n x 20
• Other incorrect

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