Find the sum of the AP 2,7,12......to 12 terms
Answers
Answered by
17
Step by step explanation.
a=2
d=5
Sn=n/2(2a+(n-1)d)
Sn=12/2(2*2+(11)d)
Sn=6(4+11*5)
Sn=6(4+55)
Sn=6*59
Sn=354.. Ans
Hope this is helpful to you!!!!
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anirudhsingh87:
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Actually I got the ans but in the book it was a misprint and so l was just confirming...... thanks
Plzz mark me as a brainliest plzzzz
Answered by
4
Step-by-step explanation:
Find the sum of A.P.
-37 , -33 , -29 …………. to 12 terms.
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