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Find the 12th term of given a.p -1,-4,-7 also find s10 |
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Answer» Answer: a = -1 ,d = -4+1= -3 n = 12 a12 = -1+(12-1)(-3) -1+11(-3) -1-33 = -34 5(-2-27) 5×(-29) -145 |
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