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The 8th term of ap is 0 prome that 38th term is triple than 18th term

Posted by Farhan Quazi 6 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 6 years, 3 months ago

a(8) = a+7d, where a is the first term and d is the common difference.

a+7d=0

a=-7d

A +7d= 0

a= -7d

As is the 38th term

a₃₈ = a +37d

= -7d + 37d

= 30d

a(38) = a+37d = -7d+37d = 30d

a(18)=a+17d = -7d+17d = 10d

30 d = 3 times 10 d

38th term is triple its 18th term

0Thank You

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