Q. Find the middle term of A.P. 6, 13, 20...216.
HELP ME PLZ...
Answers
Answered by
4
hope this helps.............
if this correct..................
please please please please...
mark as brainlist...
if this correct..................
please please please please...
mark as brainlist...
Attachments:
Answered by
4
From the given AP.
a = 6 d = 13-6 = 7 (d = a₂-a₁)
Then
aₓ = a + (x-1)d
216 = 6 + (x-1)7
(x-1)7 = 216-6
(x-1) = 210/7
x = 30 + 1
x = 31st term.
Then Middle term = Median = 31+1 / 2
= 32/2 = 16th term.
a₁₆ = a + (16-1)d
= 6 + 15(7)
= 6 + 105
= 111
______________________________________________________
☺☺☺ Hope this Helps ☺☺☺
a = 6 d = 13-6 = 7 (d = a₂-a₁)
Then
aₓ = a + (x-1)d
216 = 6 + (x-1)7
(x-1)7 = 216-6
(x-1) = 210/7
x = 30 + 1
x = 31st term.
Then Middle term = Median = 31+1 / 2
= 32/2 = 16th term.
a₁₆ = a + (16-1)d
= 6 + 15(7)
= 6 + 105
= 111
______________________________________________________
☺☺☺ Hope this Helps ☺☺☺
Similar questions