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Find the sum of first 16 terms of an AP whose n term is given by sn = 5n-3 |
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Answer» Step-by-step explanation: ANSWER T n
=5n−3 T 1
=5(1)−3=2 T 2
=5(2)−3=7 d=T 2
−T 1
=7−2=5 a=T 1
=2 S 20
= 2 20
[2a+19d] =10(4+95) =990. |
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