Mathematics
The 24th term of the A.P. −1, 3, 7, 11, … is:
83
87
91
95
AP
2 Likes
Answer
The given Arithmetic Progression (A.P.) is
-1, 3, 7, 11,…..
a = -1
d = 3 - (-1) = 4
n = 24
We know that,
nth term of A.P. :
∴ Tn = a + (n - 1)d
⇒ T24 = -1 + (24 - 1)(4)
= -1 + (23)4
= -1 + 92
= 91.
Hence, option 3 is the correct option.
Answered By
2 Likes
Related Questions
The nth term of an Arithmetic Progression (A.P.) is 2n + 5. The 10th term is :
7
15
25
45
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
If 70, 75, 80, 85 are the first four terms of an arithmetic progression, then the 10th term is:
35
25
115
105
The A.P. 6, 13, 20, …, 216 has 31 terms. The middle term of the A.P. is :
91
97
107
111