Respuesta :

mhanifa

Answer:

4917

Step-by-step 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