In an A.P. of 50 terms, the sum of first n terms is 210 and the sum of its last 15 terms is 2565. Find the AP
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We know,
Sn = n/2 (a + l)
Sn =50/2 (210 + 2565)
Sn =25 * 2775
Sn =7815
Hope it heps you dear friend
Sn = n/2 (a + l)
Sn =50/2 (210 + 2565)
Sn =25 * 2775
Sn =7815
Hope it heps you dear friend
Answered by
0
According to the question:-
Hence required AP is →
3,7,11,15,....,199
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