Question

The first term of an AP is 5 ,the
last term is 45 and the sum is
400.Find the number of terms
and the common difference.
​

Answer 1

Answer:

16

Step-by-step explanation:

sn=N/2(a+l) use this formula u can get answer

Answer 2

Answer:

⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️⬆️

REFER TO THE ATTACHMENT FOR ANSWER

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