Question

If the sum of certain number of terms starting from first term of an ap is 25 ,22, 19 is 116 find the last term.

Answer 1

From the equation
a = first term (25)

d = difference between two terms (-3)

n/2=[2a + (n-1)d]

From this equation we get the value of 'n'

Now put the value of 'n' in
$a \ \frac{}{n} = 2a + (n - 1)d$

You will get the answer

Hope this will help you.....

Answer 2

Hey mate!

Here's your answer!!
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The last term is 4.

Kindly refer to the given attachment file above for the complete answer.

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$hope \: it \: helps \: you...$
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