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Arithmetic and Geometric Sequences
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An arrangement of numbers written in definite as per some specific rules is called
combination
permutation
subset
Sequence
24th term in Arithmetic Progression 3, 5, 7, .... is
48
A
47
52
Next term of 9, 12, 16, 21 is
27
30
34
24
In arithmetic sequence, common difference is denoted by
R
n
D
Geometric Progression between 5 and 9 is
15
7
√5
±3 √5
7th term of Geometric Progression 2, 6, 18, ... is
2919
729
1458
5832
Arithmetic mean between a and 10 is 30, value of ‘a’ should be
45
60
50
53
If a, G, b are in Geometric Progression then ‘G’ is said to be
None of above
standard deviation
geometric mean
Arithmetic Mean
Geometric Progression between −4 and −9 is
±6
±8
−8
−6
If sequence does not has a last term, then it is said to be
None of above
arithmetic sequence
finite sequence
infinite sequence
Three Geometric means between 2 and 32 are
6, 10, 14
6, 8, 10
4, 8, 16
10, 12, 14
Arithmetic mean between −4 and 12 is
−4
3
4
5
To represent a sequence, a special notation is used called
a⁄n
am
an
Arithmetic mean between x -1 and x + 7 is
x - 4
x + 4
x + 3
x - 3
In arithmetic sequence, terms are denoted by
an
am
a⁄n
If a = 4, an = 110, d = 2, then value of ‘ n’ should be
52
53
51
54
Arithmetic mean between √5 and 3√5 is
√5
2√5
5
4√5
Geometric mean is calculated by
a - b⁄2
± ab
± √ab
(a + b )²
If r = 10, an = 100, a = 1 then ‘n’ should be equal to
1
4
3
2
Three arithmetic means between 11 and 19 are
13, 14, 15
13, 15, 17
14, 15, 17
12, 14, 15
1
2
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