The 8th term of ap is 17 and the 19th term of ap is 39 find 25term
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Answers
Answered by
3
Answer:
2341term
Step-by-step explanation:
Hope it helps you
Answered by
1
Answer
51
Step-by-step explanation:
Given that: T
8
=17,T
19
=39,T
25
=?
To find T
25
, first we should find a and d.
d=
p−q
T
p
−T
q
d=
19−8
T
19
−T
8
=
11
39−17
=
11
22
∴d=2
Consider,
T
8
=17
a+7d=17 [∴T
n
=a+(n−1)d]
a+7(2)=17
a+14=17
∴a=3
To find T
25
,T
n
=a+(n−1)d
T
25
=3+(25−1)2=3+(24×2)=3+48
∴T
25
=51
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