Question

d=-0.5,a=-1.5,find AP 18th term of -40,-15,10,35......

Answer 1

Hey there!

A.P. = -40, -15, 10, 35, ......

Here,
a = -40

d = +15

n = 18

$a_n = a + (n-1)d$

$a_{18} = -40 + (18-1)15$

= -40 + 255

= 215

Hence,
18th term of the A.P. = 215

HOPE IT HELPED ^_^