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    Question

    Find the sum of the first 15 natural

    numbers.
    A 105 Correct Answer Incorrect Answer
    B 110 Correct Answer Incorrect Answer
    C 120 Correct Answer Incorrect Answer
    D 115 Correct Answer Incorrect Answer

    Solution

    Sum of first 'n' natural numbers = n(n + 1) ├╖ 2
    Required sum = 15 ├Ч (15 + 1) ├╖ 2 = 15 ├Ч 16 ├╖ 2 = 120

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