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    Question

    Find the sum of the first 25 even natural numbers.

    A 695 Correct Answer Incorrect Answer
    B 770 Correct Answer Incorrect Answer
    C 650 Correct Answer Incorrect Answer
    D 445 Correct Answer Incorrect Answer

    Solution

    Even numbers: 2, 4, 6, тАж The nth even number = 2n Sum of first n even numbers = n(n + 1) Here n = 25: Sum = 25 ├Ч 26 = 650 Answer: 650.

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