Question

if the nth term of an arithmetic progression is an=2n-1 , then the arithmetic progression is A)1,5,9 B)2,6,10 C)1,3,5 D)1,2,3​

Answer 1

Answer:

option D

Step-by-step explanation:

To find its first three terms we use the formula,

First term-

an=2(1 )- 1

an=2-1

an=1

second term-

an=2(2)-1

an=4-1

an=3

third term-

an=2(3)-1

an=6-1

an=5

Therefore the AP is 1,3,5