Question

How many terms are there in the AP 121,127,133,......361 ?

Answer 1

an= a+(n-1)d
Here a is 121 and d is 6
361=121+6n-6
246=6n
n= 41

Answer 2

HEY THERE !!
HERE
first tERM , a= 121

d = 6

an = 361
we know
an = a + ( n-1)d

=> n-1 = 361 -121 /6
=> n = 41

Hence the no of term is 41
hope this helps u