Question

if the n th term of an AP -1, 4, 9, 14,...... is 129.Find the value of n​

Answer 1

Answer:

n=27

Step-by-step explanation

an=a+(n-1)d, where d is common diffrence

129=-1+(n-1)5

129=-1+5n-5

129+6=5n

135=5n

135/5=n

27=n

0

Answer 2

Answer:

hope it helps u...

plz mark as brainliest...