Question

3 rd term of an arithmetic sequence is 17 what is the sum of first and fifth term of this sequence

Answer 1

Answer:

34

Step-by-step explanation:

$a + 2d = 17 \\ \\ SUM \: OF\: FIRST\:TERM\:AND \: FIFTH\:TERM\:=a + a + 4d = 2a + 4d \\ \\ = 2(a + 2d) \\ \\ = 2(17) \\ \\ = 34.$