Question

Find the value of the middle most term of the ap 7,13,19.........,247

Answer 1

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Answer 2

Answer:127

Step-by-step explanation:

Common difference = 13-7=6

First term= 7

Tn=a+(n-1)d

247=7+(n-1)6

{247-7}/6=n-1

240/6=n-1

40+1=n

N=41

Hence the middle 21th middle term is

Tn=a+(n-1)d

t21=7+(21-1)6

T21=7+(20)6

T21=7+120

T21=127

Middle most term is 127.

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