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Check whether - 150 e is a term of AP 11,8,5,2.......

Posted by Ajay Kushwaha 5 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Kritangam Garg 5 years, 10 months ago

0Thank You

Sumitcool Coolsharma 5 years, 10 months ago

Let - 150 is the nth of AP 11,8,5,2.......which means that an=-150 Here, first term =a=11,d=8-11=-3 Using formula an=a+(n-1)d, to find nth term of AP -150 =11+(n-1)(-3) =-150=11-3n+3 =3n=164 =n=164/3 But, n cannot be in fractions Therefore, our supposition is wrong, - 150 cannot be term in AP

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CBSE > Class 10 > Mathematics