Which of the following represents the sum of the series below?
4 + 7 + 10 + 13 + 16 + 19 + 22 + 25 + 28 +31 + 34 + 37 + 40
བ( 13:40)
+
2
о
13
4+40
2
40=3+(n-1)4
40=4+(n-1)3