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Find the sum of( 5+13+21+....+121) |
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Answer» a=5,d=8 l=121an=a+(n-1)d121=5+(n-1)x8116=8n-88n=124n=124/8=15.5So 121 cannot be term of this AP,So question is not correct(this is not an AP)pl check question again 1008 |
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