Question

find the middle term of ap 6 13 20 ...............216

Answer 1

a-6

d-7

an-a+(n-1)d

216=6+(n-1)7

n=31

Total no of terms=31

Middle term=(31+1)/2

=16 th

a16=a+(16-1)d

=6+(15)7

=111

Therefore the middle term of AP is 111

Hope u understand

Thnx☺️

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Answer 2

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Step-by-step explanation:

$a = 6......d = 7....a_n = 216$

we know that ,

$a_n = a + (n - 1)d$

Put the values of a , d , and an

you will get n = 31

So, the total no. of obs. are 31

now, Median =

$\frac{n + 1}{2}$

$= \frac{31 + 1}{2} \\ = \frac{32}{2} \\ = 16$

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