which term of an AP : 3,10,17.... will be 84 more than its 13th term
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Answered by
35
the answer is 25th term
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rafa2:
hi
Answered by
9
Hey
Here is your answer,
a = 3
d = 7 ,
13th term will be ,
a13 = a + 12d
a13 = 3 + 12×7
a13 = 3+ 84 = 87
Since , 84 more than its 13th term ,so ,value of term will be =
87 + 84 = 171
So value of term is 171
Now using ,
an = a+(n-1)d
171 = 3 + 7n - 7
171 + 4 = 7n
175/7 = n
N = 25 ,
So 25th term will be 84 more than its 13th term
Hope it helps you!
Here is your answer,
a = 3
d = 7 ,
13th term will be ,
a13 = a + 12d
a13 = 3 + 12×7
a13 = 3+ 84 = 87
Since , 84 more than its 13th term ,so ,value of term will be =
87 + 84 = 171
So value of term is 171
Now using ,
an = a+(n-1)d
171 = 3 + 7n - 7
171 + 4 = 7n
175/7 = n
N = 25 ,
So 25th term will be 84 more than its 13th term
Hope it helps you!
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