Question 1 In an arithmetic series, the 14th term is −20 and the 10th term is −12 What is the first term and the common difference? First term=Expected answer: Common difference=Expected answer: Save answer Score: 0/2 Feedback for . Hide feedback.The feedback has changed.This feedback is based on your last submitted answer. Save your changed answer to get updated feedback. Or, you could: ⤺ Go back to the previous part There's nothing more to do from here. Advice To find the common difference d we note that the 14th term is −20 and the 10th term is −12 so we can find the common difference d by noting −12−−20=(10−14)×d, hence common difference =−2 It is then straightforward to find the first term a1 by substituting the common difference back into either of our given terms. For example, we know −20=a1+(14−1)×−2, hence a1=6 Score: 0/2 Total 0/2 Move to the next questionTry another question like this oneReveal answers