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If an A.P. is 3,5,7,9……. Find the 12^th term of the A.P.(a) 12(b) 21(c) 22(d) 25I got this question by my college director while I was bunking the class.The query is from Arithmetic Progression(A.P.) in division Sequences and Series of Mathematics – Class 11 |
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Answer» CORRECT ANSWER is (d) 25 To elaborate: From the given A.P., a=3 and d=5-3 =2. We know, an= a + (n-1) d => A12 = a+11d = 3+11*2 = 3+22 = 25. |
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