Question

which of the following is not in a.p?1.-1.2,0.8,2.8,...2.4/3,7/3,9/3,...3.-1/5,-2/5,-3/5,...4.1820,1920,2020,...?​

Answer 1

Answer:

b) 2020

Step-by-step explanation:

here, a= -2018

n=2020

&,d=2

as,

$a_{n} = a + (n - 1)d$

$a_{n} = - 2018 + (2020 - 1)2$

=2020