Answer:
k=12
Explanation:
as we know if terms are in ap then common difference is same
hence if a,b,c are in ap then
b-a=c-b. ...1
so
2b=c+a. from equation 1
putting values as
b=k
a=5
c=19
we get k =12
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Answers & Comments
Answer:
k=12
Explanation:
as we know if terms are in ap then common difference is same
hence if a,b,c are in ap then
b-a=c-b. ...1
so
2b=c+a. from equation 1
putting values as
b=k
a=5
c=19
we get k =12