If first term is 1
tn = 32 Sn = 55
find r
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O don't know.
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a = 10, d = 5 (2) a = –3 ... Find the first term and common difference for each of the A.P. (1) 5, 1 ... Decide whether following sequence is an A.P., if so find the 20th term of the progression. ... Sum of first 55 terms in an A.P. is 3300, find its 28th term. ... a16=11-2(16) (from (1)) =11-32 =-21 ... Simple interest (S.I.) = P×R×T100
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