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- 1. Multiple Choice
In an AP, if d = –4, n = 7, an = 4, then a is
6
7
20
28
- 2. Multiple Choice
-20
20
-30
30
- 3. Multiple Choice
The 21st term of the AP whose first two terms are –3 and 4 is
17
137
143
-143
- 4. Multiple Choice
If the common difference of an AP is 5, then what is a18 – a13?
5
20
25
30
- 5. Multiple Choice
The sum of first five multiples of 3 is
45
55
65
75
- 6. Multiple Choice
The middle most term (s) of the AP:–11, –7, –3, ..., 49 is:
18,20
19,23
17,21
23,25
- 7. Multiple Choice
If 7 times the 7th term of an AP is equal to 11 times its 11th term, then its 18th term will be
7
11
18
0
- 8. Multiple Choice
In an AP if a = 1, an = 20 and Sn = 399, then n is
19
21
38
42
- 9. Multiple Choice
If the numbers n – 2, 4n – 1 and 5n +2 are in AP, then the value of n is:
1
2
-1
-2
- 10. Multiple Choice
The first four terms of an AP, whose first term is –2 and the common difference is –2, are
– 2, 0, 2, 4
– 2, 4, – 8, 16
– 2, – 4, – 6, – 8
– 2, – 4, – 8, –16
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