Multiple Choice Questions on The sum of first 50 natural numbers is ........ for NDA Exam Preparation

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Multiple Choice Questions

The sum of first 50 natural numbers is ........

Mathematics (NDA) Arithmetic progression
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    The sum of first 50 natural numbers is?

    1200

    Incorrect Answer

    1275

    Correct Answer

    1250

    Incorrect Answer

    1290

    Incorrect Answer
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    Explanation:

    First 50 natural numbers are 

          1,2,3,……,50 

    Here , a = 1 , n =50 and l = 50 

    Thus ,   S = 50/2 [ 1+50 ] 

    = 25 ×51 

    = 1275 

    By: bhavesh kumar singh
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