Question

if an=2n-1 then find the value of S5​

Answer 1

Answer:

S5 = 9

Step-by-step explanation:

an = 2n - 1

S5= (2 ×5) -1

S5 = 10-1 =9

Answer 2

Step-by-step explanation:

S5=9

is your answer.........Xd