Question

find the value of the middle most term of the AP -11,-7,-3....49

Answer 1

Heya!!

Thanks for asking the question.

Answer : - 17

The complete solution is in the pic above.

Hope it helps you : )

Answer 2

49=-11+(n+1)4
49+11=-4n+4
60-4=4n
n=14
Middle most is 14/2=7
t7=a+7
=-11+7*4
=-11+28
=17