Question

Find the middle most term of the AP 200,196,192,....0​

Answer 1

Step-by-step explanation:

a=−11

d=4

49=−11+(n−1)4

60=4n−4

64=4n

n=16⟶ there are 16 terms.

Since the terms are even, there will be two middle most terms.

∴n=8,9

When n=8,a 8 =17n=9,a 9 =21∴a 0,9 = 217+21 =19

Answer 2

Step-by-step explanation:

first find number of this series

so

An= a+(n-1) d

0 = 2oo+(n-1)4

-200=4n-4

4n=-196

n=-49

so

mid trem is 25

so

a25=a+(-25-1)4

=200+(-26)4.

= 200-104

find

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