Find the sum of the first 50 terms of the arithmetic sequence with the first term 3 and the third term 11.

Answer:

3,7,11,15,19,23,27,31,35,39,43,47,51,55,59,63,67,71,75,79,83,87,91,95,99,103,107,111,115,119,123,127,131,143,147,151,155,159,163,167,171,175,179,183,187,191 and 199

sumof the first50 termsof the arithmetic sequence is 5050.## What are arithmetic and geometric sequence?

d = aₙ – aₙ₋₁ = aₙ₋₁ – aₙ ₋₂.r = aₙ/aₙ₋₁ = aₙ-₁/aₙ₋₂.differenceof the two terms.arithmetic sequenceshere ;