Question

    Which of the following is not equal to 673?

    A 6 × 100 + 7 × 9 + 10 Correct Answer Incorrect Answer
    B 5 × 100 + 17 × 9 + 10 Correct Answer Incorrect Answer
    C 5 × 100 + 17 × 9 + 20 Correct Answer Incorrect Answer
    D 6 × 100 + 21 × 3 + 10 Correct Answer Incorrect Answer

    Solution

    5 × 100 + 17 × 9 + 10 ¹ 673
    500 + 153 + 10 ¹ 673
    663 ¹ 673

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