Question

find the middle term of the AP 213, 205, 197... 37.

Answer 1

Hello Mate

In this Question a= 213

d= a2-a1 = 205 - 213 = -8

now,

37= a+(n-1)d

37= 213 + (n-1)-8

37= 213 -8n +8

37= 221 -8n

8n=221 - 37

8n= 184

n=184/8

n=23

the  middle most term would be 23/2 = 11.5 which is 12

an= a +(n-1)d

an= 213 +(12-1)-8

an= 213 -88

an=125

the middlemost term is 128

Answer 2

Answer:Hey guys ..... It's 128

Step-by-step explanation:Here is how

In this Question a= 213

d= a2-a1 = 205 - 213 = -8

now,

37= a+(n-1)d

37= 213 + (n-1)-8

37= 213 -8n +8

37= 221 -8n

8n=221 - 37

8n= 184

n=184/8

n=23

the  middle most term would be 23/2 = 11.5 which is 12

an= a +(n-1)d

an= 213 +(12-1)-8

an= 213 -88

an=125

the middlemost term is 128

Thanks