Find n
th term of an AP 3, 8, 13, 18, ...
Answers
Answered by
1
Answer:
23 , 28 , 33 , 38 , 43 ,48 ...................infinite numbers
Answered by
1
Solution:
Tn = a + (n - 1) d
a = 3
d = 5
= 3 + (n - 1) 5
= 3 + 5n - 5
= 3 - 5 + 5n
= -2 + 5n
-5n = -2
n = 2/5
We have obtained n as a non-integer, whereas n should have been an integer.
This can only mean that is not part of the given AP.
Hope that this would help.
Tn = a + (n - 1) d
a = 3
d = 5
= 3 + (n - 1) 5
= 3 + 5n - 5
= 3 - 5 + 5n
= -2 + 5n
-5n = -2
n = 2/5
We have obtained n as a non-integer, whereas n should have been an integer.
This can only mean that is not part of the given AP.
Hope that this would help.
Similar questions