Question

What is the algebric expression Of the arithemetic sequence 1,3,5........

Answer 1

Answer:

2n - 1

Step-by-step explanation:

nth term of APs ia given by a + ( n - 1 )d, where a is the first term and d is the common difference.

Here,

a = first term = 1

d = common difference = 5 - 3 = 3 - 1 = 2

Hence,

nth term = a + ( n - 1 )d

→ 1 + ( n - 1 )2

→ 1 + 2n - 2

→ 2n - 1

Required expression is 2n - 1