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Find the sum of the sequence. 42+43+44+45+...+107
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Find the sum of the sequence. 42+43+44+45+...+107

User MrMoeinM
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5.3k points

1 Answer

3 votes

Answer:

4917

Explanation:

Given sequence:

  • 42, 43, 44, 45, ..., 107

This is AP with common difference of 1, the first term of 42 and the last term of 107

Number of terms:

  • 107 - 42 + 1 = 66

Sum of the terms:

  • Sₙ= 1/2*n*(a₁+aₙ)
  • Sₙ= 1/2*66*(42+107) = 4917

Answer is: 4917

User S K
by
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