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20 questions
Is the sequence arithmetic: 0.2, 0.22, 0.222, 0.2222, ....
yes
no
What is the common difference of an AP in which a18 – a14 = 32?
4
6
8
-8
The 4th term from the end of the AP: –11, –8, –5, ..., 49 is
40
-2
58
-40
2019th term of an AP is written as
a + 2018d
a + (2019 + 1) d
a- 2018d
2a + 2018 d
The angles of a triangle are in A.P., the least being half the greatest. Find the angles.
-30,-60,-90
-40,-60,-80
40, 60, 80
45,45,90
If the nth term of an AP is (2n+1) then the sum of its first three terms is
6n+21
15
12
21
. How many terms of the A.P. 65, 60, 55, … be taken so that their sum is zero?
25
27
29
31
Determine the AP whose fifth term is 19 and the difference of the eighth term from the thirteenth term is 20.
4,8,12,16
3,7,11,15
-3,-7,-11,-15
-4,-8,-12,-16
two APs have the same common difference. The first term of one of these is -1 and that of the other is – 8. Then the difference between their 4th terms is
1
-8
7
9
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
In an AP, if d = -4, n = 7, an = 4, then a is equal to
,
6
7
20
28
The next term of an AP 7 , 28 , 63 ,......is
70
84
98
112
The sum of first 'n' terms of an AP is (3n2+6n). The common difference of the AP is ______
6
9
15
-3
The common difference of the AP p1 , p1−p , p1−2p ........is
p
-p
-1
1
The sum of first 20 odd natural numbers is
100
210
400
420
If 4, x1,x2,x3,28 are in AP then x3 is ______
19
23
22
cannot be determined.
The following are Arithmetic Progressions, except
12, 6, 3, ...
4, 2, 0, ...
x, x+2, x+4, ...
21, 0, −21, ...
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