Question

1000,900,800,...,Find the nth term of the given AP.

Answer 1

Hey Friends,
_______________________________

a=1000 & d=900-1000=-100

$t_{n} = 1000 + (n - 1) - 100$
$t_{n} = 1000 - 100n + 100$
$t _{n} = 1100 - 100n$


Hope it's help you!!!!
______________________________

Answer 2

a = 1000

d = 900 - 1000 = - 100

Tn = a +(n-1) d

= 1000 + (n-1)(-100)

= 1000 - 100n + 100

= 1100 - 100n