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Which term of the Ap:121,117,113,....,is its first negative term? |
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Answer» 32 a=121,d=-4Tn<0a+(n-1)×d <0121+(n-1)×(-4) <0121-4n+4 <0125-4n <0125<4n4n>125n= 31.25Hence n= 32 |
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