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    Question

    Find the sum of the first 40 natural

    numbers.
    A 780 Correct Answer Incorrect Answer
    B 800 Correct Answer Incorrect Answer
    C 820 Correct Answer Incorrect Answer
    D 840 Correct Answer Incorrect Answer

    Solution

    Sum of first 'n' natural numbers = n(n + 1) ÷ 2
    Required sum = 40 × (40 + 1) ÷ 2 = 40 × 41 ÷ 2 = 820

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