Find the sum for an AP 9,17,25.......till 12th term.
please dear friends tell me the answer fast it's urgent.....
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Find the sum for an AP 9,17,25.......till 12th term.
please dear friends tell me the answer fast it's urgent.....
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Answer:
Step-by-step explanation:
A.P= 9,17,25....
Common difference= 8
A1= 9
A12= 12
To find-
Sn=