find the number of terms in A. P 7,13,19....205
Answers
Answered by
1
Answer:
an=a+(n-1)d
205=7+(n-1)6
198=(n-1)6
33=(n-1)
n=34
Answered by
2
Solution:
a = 7
d = 13 - 7 = 6
An = 205
Since,
An = a + (n - 1) d
205 + 7 + (n - 1) 6
205 - 7 = (n - 1) 6
198 = (n - 1) 6
198/6 = n - 1
33 = n - 1
33 + 1 = n
n = 34
Therefore, number of terms in the given A.P. = 34.
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