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Find the middle term of an AP .213,205,197,.....,37. |
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Answer» a+(n-1)d=37213+(n-1)(-8)=37(n-1)(-8)=-176n-1=22N=23Middle term, n+1÷2=12a12=a+10d=213+10(-8)=213-80=133 Sayad phala vala galat ha mana d=8 liya that lakin Lana d =-8 ha lakin yoga OSI tarha sa a=213,d=8,an=37a+(n-1)d=an213+(n-1)8=37(n-1)8=37-213(n-1)8=-176(n-1)=-176÷8n-1=-22n=-21So,n=21 Middle term,n+1÷2N=11a11=a+10d=213+10×8=213+80=293 Sorry 133 It\'s 1333 |
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