the first term of AP is 3..last term is 17.if the sum of all the terms is 150,what is the 5th term?
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Answered by
2
Answer:
The sum of all terms is
2
n
(a+l)=150.
2
n
×20=150
n=15
a
15
=17
a+14d=17
d=1
Therefore, 5th term is a+4d=7.
Step-by-step explanation:
Answered by
0
Answer:
An= a+(n-1)d= 3+(n-1)d =17
Sn=n/2{2a+(n-1)d= n/2{6+(n-1)d} = 150
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