5th term of
a.p. is 11 and 9th term is 7 find 16th term
Answers
Answered by
10
given
a+4d=11
a+6d=7
subtract above equations
we get -2d=4
d=(-2)
put d=-2 in a+4d=11
then a=(19)
for 16th term a.p=a+15d
19+15(-2)
19-30
-11
a.p of 16th term is -11
a+4d=11
a+6d=7
subtract above equations
we get -2d=4
d=(-2)
put d=-2 in a+4d=11
then a=(19)
for 16th term a.p=a+15d
19+15(-2)
19-30
-11
a.p of 16th term is -11
Answered by
0
-11
Given: a+4d=11
a+6d=7
Subtract above equations
we get -
2d=4
d=-2
put d=-2 in a+4d=11
then
a+4(-2)=11
a-8=11
a=11+8
a=19
for 16th term
A.P
a+15d
=19+15(-2)
=19-30
=-11
A.P of 16th term is -11
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