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Which term of the AP:121,117,113,........,is its first negative term?(Hint:Find n for an |
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Answer» 32 a=121d= -4Tn=a+(n-1)d<0=121+(n-1)-4<0=121+4-4n<0=125-4n<0=4n>125=n>125/4=n>31.25So; 32th term will be its first negative term. A=121 and d=-4An= a+(n-1)d =121+(n-1)4Since a n is negative show value of a n is less then rero 32 |
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