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Find the sum of first 30 natural numbers

  • 470
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  • 465
  • 463
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3. Marks of a student were wrongly entered in computer as 83, actual marks of that student were 63. Due to this mistake average marks of whole class got increased by half (1/2). Find the total number of students in that class.

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5. When a student weighing 45 kgs left a class, the average weight of the remaining 59 students increased by 200g. What is the average weight of the remaining 59 students

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  • SOLO 11 years ago

    u have given sum of 30 natural numbers not the avg....