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Math 11 Chapter 6
Sequences and Series
Test - 1
1.
a
n
= (-1)
n
(2n-3) then a 100 =?
a) 197
b) 196
c) 186
d) 176
2.
G
n
= a (b/a)
n/n+1
is the nth G.M between?
a) a and b
b) a and c
c) G and b
d) n and +n
3.
If the population of village increase geometrically at the rate of 4% annually then r = ?
a) 1 + 0.014.
b) 1 + 0.004
c) 1 + 0.204.
d) 2 + 0.004.
4.
If a, b, c and d are in G.P then:
a) b
2
= ac and c
2
= bd
b) b
3
= ac and c
2
= bd
c) b
2
= ac and c
3
= bd
d) b
2
= ac and c
5
= bd
5.
The general term of the sequenced -1, 1, -1, 1, -1, ………is
a) (-1)
n
b) (-1)
n-1
c) (-1)
n+1
d) (-1)
n+3
6.
The Sum of the Ist n terms of an arithmetic series is ……..
a) Sn = n/2 [2a – (n-1)d]
b) Sn= n/2[2a + ( n-1)d]
c) Sn = n/2 [2a + (n+1)d]
d) Sn= a(r
n
– 1) / r – 1
7.
Domain of a sequence is some times taken as the set of?
a) whole numbers
b) partial numbers
c) real numbers
d) complex numbers
8.
An infinite sequence has no___________ term.
a) 2215.25
b) 2315
c) 2315.25
d) None of the above.
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