Question

find 27th and nth term of given A.P 5,2,-1,-4,....​

Answer 1

Step-by-step explanation:

a=5

d= -3

27th term = a+ 26d

= 5 +26(-3)

= 5-78

= -73

Answer 2

Step-by-step explanation:

sn=n/2(2a+(n-1)d

sn=n/2(2(5)+(n-1)(-3))

n/2(10-3n+3)

n/2(13-3n)

sn=13n-3n^2/2