Question

a=15
d=5
an=200
n=?
How many terms are in ap?

Answer 1

Answer:

175

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

a= 15

d = 5

tn = 200

tn = a+(n-1)d

200= 15 +( n-1) 5

200-15 = (n-1)5

185=(n-1)5

185/5=n-1

37 = n-1

n = 37+1

n = 38

so there are 38 terms in ap..

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