Mathematics
If 70, 75, 80, 85 are the first four terms of an arithmetic progression, then the 10th term is:
35
25
115
105
AP
2 Likes
Answer
The given Arithmetic Progression (A.P.) is
70, 75, 80, 85, ….
a = 70
d = 75 - 70 = 5
n = 10
We know that,
nth term of A.P. :
∴ Tn = a + (n - 1)d
⇒ T10 = 70 + (10 - 1)5
= 70 + (9)5
= 70 + 45
= 115.
Hence, option 3 is the correct option.
Answered By
2 Likes
Related Questions
The first term of an A.P. is 7 and the common difference is 3. The general term of the A.P. is:
Tn = 3n − 4
Tn = 2n + 5
Tn = 3n + 4
None of these
The 24th term of the A.P. −1, 3, 7, 11, … is:
83
87
91
95
The A.P. 6, 13, 20, …, 216 has 31 terms. The middle term of the A.P. is :
91
97
107
111
Which term of the A.P. 7, 13, 19, 25,….. is 241?
40th
36th
44th
45th