a=200 d =50 n=30 find sn
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Answered by
1
Hii mate ....
Sn = n/2 ( 2a + [n-1] d )
= 30/2 ( 2×200 + [29×50]
= 15 ( 400 + 1450 )
= 15 × 1850
= 27750.
Hope this helps you. ..
Sn = n/2 ( 2a + [n-1] d )
= 30/2 ( 2×200 + [29×50]
= 15 ( 400 + 1450 )
= 15 × 1850
= 27750.
Hope this helps you. ..
Answered by
0
Sn (30) = 30/2 (400 + 1450)
==》 27750
==》 27750
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