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27 Decide whether following sequence is an A.P., if so find the 20th term of theprogression-12, -5, 2, 9, 16, 23, 30,... |
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Answer» Yes it is an apas comman difference is samea = -12d = 7now 20th term= a+19d= -12+19*7-12+ 133121 a=-12; d = 7; 20 th term = -12 +19(7)=-12+133=121 |
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