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  • Maths Quiz (NTSE)
  • The sum of first 45 natural numbers is
Multiple choice

The sum of first 45 natural numbers is

  1. 1035

  2. 1280

  3. 2070

  4. 2140

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A Correct answer
Explanation

The sum of the first n natural numbers is given by n(n+1)/2. For n=45, the sum is 45 * 46 / 2 = 45 * 23 = 1035.

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