Find the 18th and nth term of the A.P. given by: 8, 13, 18, ... |
$80, 3+5n$ $93, 3+5n$ $65, 3-2n$ $40, 5+3n$ |
$93, 3+5n$ |
Given A.P.: 8, 13, 18, ... a= 8 d = 5 18th term = a + 17d = 8 + 17*5 = 93 nth term = a + (n-1)d = 8 + (n-1)*5 = 3 + 5n The correct answer is Option (2) → $93, 3+5n$ |