Question

how many terms are there in following AP 5,-4,-13,......-265​

Answer 1

Answer:

a = 5 , d = -4-5= -9 , An = -256 , n=??

Step-by-step explanation:

since ,An = a +(n-1)d

-256 = 5 +(n-1) -9

-256-5 = (n-1) -9

-261. = (n-1) -9

-251/-9 = (n-1)

29 = n-1

n= 29+1

n= 30

therefore there are 30 terms in this AP

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Answer 2

Answer:

8

Step-by-step explanation:

it is solve by a formula