Q. 104.0( 11 Votes )

Find the middle t

Answer :

The given A.P. is 213, 205, 197, …, 37

Let n be the number of terms,

Common difference, d=205-213=-8

First term, a=213

Last term, an=37,

an=a + (n-1)d

37=213 + (n-1)(-8)




So, we have to find a12 for this A.P.

a12=213 + (12-1)(-8)

a12=213 + 11 × (-8)



So, The middle term of this A.P. is 125.

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