Find the sum of first 10term of an AP whose first term is 3and10th term is 39
Answers
Answered by
1
Answer:
210
Step-by-step explanation:
Formula for sum of ap=n/2(a+l)
10/2(3+39)
5(42)=210
Answered by
1
Answer:
210
Step-by-step explanation:
formula for sum of ap=n/2(a+l)
= 10/2(3+39)
= 5(42)
= 210
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